166 CALIFORNIA ACADEMY OF SCIENCES. 



Ccelomorpha. C. maritima was described from Lower 

 California, but Horn also cites San Diego; it is similar 

 to Codus in habits. 



Ccelus. The individuals of this genus are very 

 abundant at all seasons in the sand-dunes along the 

 coast from San Francisco to San Diego; they vary 

 exceedingly in size, form and thoracic sculpture, and I 

 am unable to recognize more than two species along our 

 southern coast, viz., globosus and arenarius, the former 

 having a deeply, and the latter a feebly, sinuate epis- 

 toma. Typical grossus is very large, with unevenly 

 punctuate thorax; but there is every gradation between 

 this and typical globosus, in fact, the majority of speci- 

 mens are intermediate. Both latus and curtulus are 

 founded chiefly on form and punctuation of the 

 prothorax, both of which appear to me to be too unsta- 

 ble to be of use in specific division, and I have little 

 hesitation in placing the former as a synonym of arenar- 

 ius and the latter as a synonym of ciliatus. Two other 

 species are found on the Southern California islands: 

 pacificus, on Santa Barbara and Santa Rosa, and remotus, 

 on San Clemente; it is doubtful if these two species 

 share the burrowing habit of their congeners on the 

 mainland. 



Eusattus. E. robustus has thus far occurred only 

 on San Clemente Island: politus, Santa Barbara and 

 Santa Rosa islands; apparently not common: coquil- 

 letti, Los Angeles County (Coquillett): Icevis, Southern 

 California (teste Horn.)*: dubius, Colorado and Mojave 

 deserts, Antelope Valley: productus, "Art. and Lower 

 Gal." (Horn); I have an example labeled "Gal.," doubt- 

 less from the southeastern region: convexus, taken at 



*" The Coleoptera of Baja California." Proc. Cal. Acad. Sci., 2nd Ser. Vol. IV, 1894, p. 349 



