242 ENTOMOLOGICAL SOCIETY 



Two specimens from Williams, July 20 and 21. 



Type. No. 6798, U. S. National Museum. 



A specimen from Los Angeles, California, appears to be the 

 same species. 

 Hemerobius perparvus McLachlan. 



Several examples from Williams, May 28 ; Bright Angel. July 

 12 to 17 ; Oracle, July 9 (Schwarz). 



This species is common from Texas to California. 

 Hemerobius umbratus, n. sp. 



Dark shining brown ; abdomen rather paler brown : antennae and legs 

 pale yellow. Fore wings uniformly dark brown; hind wings nearly hya 

 line, except the brown costal streak; all venation brown, unmarked. In 

 structure similar to H. occidentalis Fitch; the first sector of radius con 

 nected to lower fork of the second sector, the first sector not being forked 

 till near tip of wing. The costal area is quite broad at base. 



Length of body, 3.5 mm. ; expanse, 10 mm. 



One specimen from W r illiams, June 10. 



Type. No. 6799, U. S. National Museum. 



Readily distinguished from all other species by the uniform 

 dark colored fore wings. I have what is probably the same spe 

 cies from New Mexico, but the specimen is not in good condition. 



Family CONIOPTERYGID^. 

 Coniopteryx sp. 



Specimens from Willliams, May 29; Ashfork, June 18. 



Order TRICHOPTERA. 

 Family SERTCOSTOMATID^E. 

 Helicopsyche sp. 



One specimen from Santa Rita Mountains, June 15 (Schwarz). 

 Probably new, but closely related to H. californica'. 



Family LEPTOCERID^E. 

 Leptocella minuta Banks. 



Two from Hot Springs, August 21, appear to be identical with 

 the type from Pullman, Washington. 



Family RHYACOPHILID^E. 

 Chimarrha angustipennis, n. sp. 



Black; legs pale, spines dark; wings fumose, with black venation. 

 Very similar in structure to C/i. aterrima, but both pairs of wings are 

 narrower than in that species; the closed discal cell is plainly shorter and 

 the forks are longer than in that species. Otherwise the species are very 

 close to each other. 



Length, 5 mm. ; expanse, n mm. 



Several specimens from Hot Springs, June 21 and 22. 

 Type. No. 6800. U. S. National Museum. 



