ous activities, including" the California Academy of Sciences 

 of San Francisco. He was one of a little group of naturalists, 

 including Behr, Behrens, Stretch. Harford, Dunn, Lockington 

 and others, which met informally and known as the Arthro- 

 zoic Club. 



Rivers was Curator of Organic Natural Historv in the 

 University of California, until he resigned about 1895, and 

 removed to Ocean Park and Santa Monica, where he resided 

 till his death. Prof. Rivers, as he was generally and afifec- 

 tionately called, ranged over the whole, nearly, of the natural 

 sciences ; he was a representative of the old-time naturalists. 

 He studied and published papers on living and fossil shells, 

 Coleoptera, Lepidoptera, spiders, reptiles and collected 

 plants. His published papers are mostly in the Proceedings 

 of the California Academy of Sciences, the Bulletin of this 

 Academy in nearly every volume, Zoe, Papilio, and Entomo- 

 logical News. The titles of some of these will give a little 

 idea of his range of scientific work: Habits in the Life-His- 

 tory of Pleocoma Behrensii. A Miocene Shell in the Living 

 State. Description of the Nest of the Californian Turret- 

 Building Spider with Some References to Allied Species, The 

 Species of Amblychila, Chariessa Umbertii, the preceding all 

 in Zoe and a New Genus and Species of North American Scara- 

 hsidoe and a New Species of California Lepidoptera in the 

 Proceedings of the California Academy. And in the Bulletin 

 of this Academy : Butterfly Emigrants. Discovery of Another 

 Foodplant of Uranotes melinus. Hub., A Butterfly New to 

 Southern California. The Caterpillar Plague. Euvanessa anti- 

 opa and other papers. His last paper, with a photographic 

 plate, was published, only a short time before his death, in 

 the Bulletin of this Academy for July, 1913, being: A New 

 Soecies of Bathytoma from the Upper Pleistocene of San 

 Pedro, Cal. 



Rivers' fine collection of Coleoptera which contained a 

 number of types and specimens from Horn and Le Conte, 

 was sold to 'Walter Horn of Berlin. Germany, many years 

 ago. In the Lepidoptera he made a special study of the 

 genera Melita-a and Clisiocampa. describing a new species of 

 the former. His collection of shells was acquired by Pomona 

 College in part, and bv Beloit College. Wisconsin; and the 

 later collections and library by Dr. F. C. Clark of Santa 

 Monica. 



Of greatest value, greater than his published work and 

 collections, was the influence of his personality on those who 

 were privileeed to have known him ; that cannot be expressed 

 in words. He was a real naturalist, and to have known him 

 was a great privilege. His little workshop and museum be- 

 hind his house, filled with books and specimens, will always 

 be remembered by those who were ever in it. — Fordyce Grin- 

 nell, Jr. 



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