172 CALIFORNIA ACADEMY OF SCIENCES. 



Palm Springs, Yuma: gracilis, Indio (Casey): sulcatus > 

 Riverside, San Diego, San Cleinente Island; not 

 common. 



Cnemeplatia . C. .sericea is generally rare; it was 

 once taken in some numbers, under boards, amid stable 

 refuse at Pomona; it is occasionally taken on the wing 

 toward evening, and at San Francisco comes to electric 

 lights, at times in great numbers. Horn speaks of the 

 species as being rare in Owens Valley, under stones. 



Alaudes. A. singularis is a very rare species origi- 

 nally taken by Dr. Horn in Owens Valley, where it was 

 found living under stones, with a small black ant. A 

 few specimens were next taken by Wickham some 

 twenty-five years later in eastern Oregon, then a 

 single example by Koebele, in the Argus Mountains of 

 southeastern California, not far south of the original 

 habitat. In November and December of 1893 and 

 1895, I secured about a dozen examples from under 

 boards in my garden at Pomona, under conditions 

 which apparently indicated no connection with ants; 

 and since then Dr. Fenyes has taken about an equal 

 number at Azusa, Los Angeles County, this time with 

 ants. I know of no other instances of its capture. 



Tribolium. T. ferrugineum and T. confusum are both 

 found in ground cereals, the former being less common 

 in my experience. Blaisdell speaks of ferrugineum as 

 being rare, under the bark of trees, at San Diego. 



Phthora. P. americana occurs at Lake Tahoe. 



Gnathocerus. G. cornutus occurs with Tribolium in 

 ground cereals. 



Echocerus. Several specimens of maxillosus have been 

 taken at Pasadena in March. 



