144 ENTOMOLOGICAL NEWS [Mar., '14 



sas; was in Denver for a short time and about the middle of 

 the seventies came to Berkley, and became a Calif ornian 

 naturalist for the remainder of his life. He became acquaint- 

 ed with all the scientists of the State and played leading parts 

 in all the various activities, including the California Academy 

 of Sciences. He was one of a little group of naturalists, in- 

 cluding Behr, Behrens, Stretch, Harford, Lockington, Dunn 

 and others, who met informally and were known as the Ar- 

 throzoic Club. 



Rivers was Curator of Organic Natural History 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 affection- 

 ately called, ranged over nearly the whole of the natural 

 sciences ; he was a representative of the old time nat- 

 uralists. He studied and published papers on living and fos- 

 sil shells, Coleoptera, Lepidoptera, spiders, reptiles and col- 

 lected plants. His published papers are mostly in the Proceed- 

 ings of the California Academy of Sciences, Bulletin of the 

 Southern California Academy of Sciences, Zoe, Papilio and 

 Entomological News. Rivers, with the late L. E. Ricksecker, 

 was the first to work out the interesting life history of Pleo- 

 coma; he studied the habits of a new California!! turret 

 building spider named in his honor by Cambridge ; he describ- 

 ed a new Aniblychila, and in the Lepidoptera was especially in- 

 terested in the genera Melitaea and Clisiocampa. His last 

 paper was published only a short time before his death, in the 

 Bulletin of the Southern California Academy for July, 1913, 

 being a description of a new fossil shell from San Pedro. 



J. J. Rivers was a real naturalist, and to have known him 

 was a great privilege. His little workshop and museum behind 

 his house in Santa Monica, filled with books and specimens, 

 will always be remembered by those who were ever in it. 



F. GRINNELL, JR. 



DR. ARNOLD PAGENSTECHER, well known for his work on 

 the Lepidoptera, died in Wiesbaden, June n, 1913. He was 

 born in 1837. 



