BULLETIN. 

 California Academy of Sciences, 



Revision of the Californiaa Species of LITHOCHASIS 

 \ and Allied Genera. 



BY THOS. L. CASEY. 



Uead J.au. ith, 1880. 



The species assignable to Litliocliavis and allied genera are 

 extremely abundant in California and arc also very numer- 

 ous individually, so tliat a review of tlie forms occurring 

 lieie, although not so desirable as a general revision of the 

 North American species, is, at the same time, amply suffi- 

 cient to form a systematic basis upon wliicli to found sucli 

 an extended work, and probably loses little of what impor- 

 tance it may possess from the omission of species occurring 

 east of the liocky Mountains, as these are com]iaratively 

 few in number and not as yet sufficiently collected. 



Belonging to the region here considered, there are de- 

 scribed below twenty-five species, most of which are rather 

 local in habitat, although a few have an extended range. In 

 regard to their favorite haunts, little is to be said; they fre- 

 quent the margins of ponds and water-courses, and are found 

 amongst decaying vegetable matter, roots of grasses, etc., 

 in stony localities, although more abundant in the deep ra- 

 vines so characteristic of the Coast Mountains. I have 

 occasionally found particular spots of very limited extent in 



l-BuLL. Cal. Acad. Sci. II. 5. Priutea January 27, 188G. 



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 AUG 2 7 1979 



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