38 CALIFORNIA ACADEMY OF SCIENCES. 



referred to in the bulletin have evidently been observed 

 on animals in America by Professor Osborn, but just how 

 many and what species are not told. One new species, 

 Trichodectes geomydis, found abundantly on the Pocket 

 Gopher, is described and figured. I find this species 

 common on Thomomys talpoides bulbivorous in this State 

 (California). Among the illustrations of the bulletin are 

 twelve original ones, indicating that at least these twelve 

 species have been personally observed by Professor Os- 

 born. 



In the American Monthly Microscopical Journal for 

 November, 1894, Professor Osborn publishes a key to 

 the genera, including in it all of the genera then known, 

 excepting Westwood's Ancistrona and Taschenberg's 

 Eurymctofius and Bothoriomclofius. 



In the American Naturalist, 187 1, in a paper entitled 

 "Certain Parasitic Insects," Professor A. S. Packard 

 names, illustrates, and briefly describes seven new spe- 

 cies of Mallophaga collected from American birds. Un- 

 fortunately neither the descriptions nor illustrations have 

 been sufficient to enable any one of these species to be 

 recognized by subsequent writers. Similarly Dr. Leidy 

 in the Proceedings of the Academy of Natural Sciences 

 of Philadelphia, refers in briefest terms to a Jlciwpou 

 taken from Pelecanus erythrorhynchus (Florida) and 

 names it Menopon -perale (see Menopon titan, this paper). 



Of other American literature on the Mallophaga, there 

 are in the Proceedings of the Boston Society of Natural 

 History, 185 1, brief abstracts of two papers read before 

 the Society by Dr. W. I. Burnett on " the' external para- 

 sites of warm-blooded animals" and " observations on 

 the relations of an order of parasites (lice) to the differ- 

 ent faunas, as bearing, first on the distinct creation of 

 types of animals, and second on the local creation of 



