Summer institute in systematics at the Smithsonian Institution 25 June - 14 July 1967, in conjunction with American Society of Zoologists and Society of Systematic Zoology. Transcript of lectures (1968)

Die Süsswasser-Entomostracen Grönlands. Eine faunistische, oecologische und tiergeographische Studie - Haberbosch, Paul, 1889 - (H.R. Sauerländer, 1920)

Syllogeus - National Museum of Natural Sciences (Canada) (National Museum of Natural Sciences, 1983)

Syllogeus - National Museum of Natural Sciences (Canada) (National Museum of Natural Sciences, 1985)

A synonymic catalogue of Orthoptera - British Museum (Natural History). Department of Zoology. (Printed by order of the Trustees [by Taylor and Francis], 1910)

A synopsis of animal classification - Wilder, Harris Hawthorne, 1864 -1928 (H. Holt, 1902)

Synopsis of the British Basidiomycetes ; a descriptive catalogue of the drawings and specimens in the Department of botany, British museum - British Museum (Natural History). Department of Botany. (Printed by order of the Trustees of the British museum, 1908)

Synopsis of the classification of the animal kingdom - Nicholson, Henry Alleyne, 1844 -1899 (W. Blackwood, 1882)

Synoptic key to the phyla, classes, and orders of animals ; with particular reference to fresh-water and terrestrial forms of the moist temperate region in North America - Allee, W. C. (Warder Clyde), 1885 -1955 (The University of Chicago press, 1923)

A synoptic text-book of zoölogy, for colleges and schools - Weysse, Arthur Wisswald, 1867 - (Macmillan, 1904)

The Syrphid of the Ethiopian region based on material in the collection of the British Museum (Natural history), with descriptions of new genera and species - Bezzi, Mario, 1868 -1927 (Printed by order of the Trustees, 1915)

System of ophthalmology - Duke-Elder, Stewart, Sir, 1898 -1978 (Mosby, 1958)

Systematic revision of the Asian forest scorpions (Heterometrinae Simon, 1879), revised suprageneric classification of Scorpionidae Latreille, 1802, and revalidation of Rugodentidae Bastawade et al., 2005 - Prendini, Lorenzo (American Museum of Natural History, 2020)

Systematic revision of the giant vinegaroons of the Mastigoproctus giganteus complex (Thelyphonida, Thelyphonidae) of North America - Prendini, Lorenzo (American Museum of Natural History, 2018)

Systematics of the "giant" Ricinulei (Ricinoididae: Ricinoides) of West Africa : with descriptions of five new species and comparative morphology of the male copulatory apparatus - Prendini, Lorenzo (American Museum of Natural History, 2021)

Systematik und Faunistik der pelagischen Copepoden des Golfes von Neapel und der angrenzenden Meeres-abschnitte - Giesbrecht, Wilhelm, 1854 -1913 (R. Friedlander & Sohn, 1892)

Systematische phylogenie - Haeckel, Ernst, 1834 -1919 (Georg Reimer, 1896)

Tabular view of the orders & leading families of Myriapoda, Arachnida, Crustacea, Annelida and Entozoa - White, Adam, 1817 -1879 (Edward Stanton, 1861)

Taxidermy and zoological collecting; a complete handbook for the amateur taxidermist, collector, osteologist, museum-builder, sportsman, and traveller - Hornaday, William T. (William Temple), 1854 -1937 (C. Scribner's sons, 1894)

The terrestrial mammals and birds of north-east Greenland : biological observations - Manniche, Arner Ludvig Valdemar, 1867 - (Bianco Lunos Bogtrykkeri, 1910)

Texas conchologist (Houston Conchology Society], 1980)

Text-book of comparative anatomy - Lang, Arnold, 1855 -1914 (Macmillan and Co, 1891)

A text-book of invertebrate morphology - McMurrich, J. Playfair (James Playfair), 1859 -1939 (H. Holt and Company, 1894)

Text-book of the embryology of invertebrates - Mark, E. L. (Edward Laurens), 1847 -1946 (S. Sonneschein and co., ltd, 1899)

Text book of zoology - Boas, J. E. V. (Johan Erik Vesti), 1855 -1935 (Sampson Low, Marston, 1896)

A text-book of zoology - Parker, T. Jeffery (Thomas Jeffery), 1850 -1897 (Macmillan, 1897)

A text-book of zoology - Parker, T. Jeffery (Thomas Jeffery), 1850 -1897 (Macmillan, 1921)

A text-book of zoology - Parker, T. Jeffery (Thomas Jeffery), 1850 -1897 (Macmillan and Co., Limited, 1910)

A text-book of zoology - Parker, T. Jeffery (Thomas Jeffery), 1850 -1897 (Macmillian and co., limited, 1910)

A text-book of zoology - Parker, T. Jeffery (Thomas Jeffery), 1850 -1897 (Macmillan and co., limited, 1897)

A text-book of zoology - Parker, T. Jeffery (Thomas Jeffery), 1850 -1897 (Macmillan and co., limited, 1910)

A text-book of zoology - Parker, T. Jeffery (Thomas Jeffery), 1850 -1897 (Macmillan, 1910)

A text-book of zoology - Parker, T. Jeffery (Thomas Jeffery), 1850 -1897 (Macmillian and co., limited, 1921)

A textbook of invertebrate morphology - McMurrich, J. Playfair (James Playfair), 1859 -1939 (H. Holt, 1896)

A textbook of invertebrate morphology - McMurrich, J. Playfair (James Playfair), 1859 -1939 (H. Holt, 1894)

The Ballarat Naturalist - Field Naturalists' Club of Ballarat (Field Naturalists' Club of Ballarat, 1986)

The Ballarat Naturalist - Field Naturalists' Club of Ballarat (Field Naturalists' Club of Ballarat, 1992)

Tierleben : allgemeine Kunde des Tierreichs - Brehm, Alfred Edmund, 1829 -1884 (Bibliographisches Institut, 1911)

Tijdschrift der Nederlandsche Dierkundige Vereeniging - Nederlandsche dierkundige vereeniging. (Brill, 1883)

Tijdschrift der Nederlandsche Dierkundige Vereeniging - Nederlandsche dierkundige vereeniging. (Brill, 1882)

Tijdschrift der Nederlandsche Dierkundige Vereeniging - Nederlandsche dierkundige vereeniging. (Brill, 1885)

Tijdschrift der Nederlandsche Dierkundige Vereeniging - Nederlandsche dierkundige vereeniging. (Brill, 1904)