80 CALIFORNIA ACADEMY OF SCIENCES. 



Pomona and Palm Springs at the last-named locality 

 found under cottonwood bark. 



Trigonurus. All our species occur from middle Cali- 

 fornia north, under bark of conifers. T. edivardsii 

 has been taken in Los Angeles County (fide Fuchs). 



Micropeplus. M. punctatus, occurs at San Diego 

 (Crotch): a single example of a probably undescribed 

 species was taken at Pasadena, in March, by sifting 

 (Fenyes): tesserula and brunneus are more northern. 



TRICHOPTERYGID.E. 



These minute things have not been systematically 

 searched for, and the number recorded from Southern 

 California, and indeed from the whole State, is very 



inconsiderable. 



* 



Actidium. Four species are on record: robustulum, 

 granulosum and attenuatum from the middle coast region 

 (Santa Cruz), and poliium from " California." 



Motschulskium. M. sinuatocolle occurs plentifully at 

 times on various beaches from San Diego northward. 



Ptilium. An unidentified species has been taken 

 sparingly at Pomona: columbianum, humile and collani 

 are said to be from " California." 



Ptenidium. P. pullum, quite common in vegetable 

 detritus near water at Pomona, etc. 



Trichopteryx. T. laticollis] ' 'Southern California," in- 

 Horn Collection: californicus and crotchii bear " Califor- 

 nia" labels in the Le Conte Collection; and sitkaensis 

 bears a gilt locality label which is supposed to signify a 

 like origin. 



Smicrus. S. filicornis, from Colorado River; Le Conte 

 Collection. 



