434 ENTOMOLOGICAL NEWS. [Dec., 'l6 



The present paper presents the description of one new 

 species and redescribes one species of Nycteribiidae and 

 records and figures a third, and describes a new genus and 

 species of Streblidae. The types of the new species are in the 

 Stanford University collection. 



NYCTERIBIIDAE. 

 Penicillidia antrozoi (Townsend). (Plate XXII, figs. 1, 2.) 



Nycteribia antrozoi Townsend, Jour. New York Ent. Soc., Vol. 

 I, p. 79 (1893). 



Penicillidia mexicana (Bigot), Speiser, Zeitschrift fur systematische 

 Hymenopterologie und Dipterologie, Vol. II, p. 172 (1902). 



Five specimens, two males and three females, from Antro- 

 ZOHS pallidits pacificus, (Santa Paula, Ventura County, and 

 Snelling, Merced County, California). The species was origin- 

 ally described from a single male taken from Antrozous palli- 

 dits in New Mexico. 



Speiser is inclined to consider this species as identical with 

 Penicillidia mexicana (Bigot), but, while this may be the case, 

 such a conclusion is at present unwarranted. Speiser was able 

 to examine the types of P. mexicana and redescribed the 

 species but his redescription was not accompanied by figures 

 and is not of such a nature as to throw much light upon the 

 matter. For the present, at least, P. antrozoi should be allowed 

 to stand. 



9 . Length, 3 mm. Head rather slender with numerous short spines 

 on the ventral side and along the anterior margin. Ocelli distinctly 

 2-facetted. Palpi rather long, with numerous stout spines. 



Thorax somewhat broader than long. Legs of the type common to 

 the genus. 



Abdomen short oval, its shape varying with the degree of distention. 

 On the dorsal side there are apparently three segments, but the exact 

 number is difficult to determine due to the extent of the membranous 

 areas. That this is the real number is indicated by the presence of but 

 three pairs of spiracles. The first segment is very large, occupying 

 nearly a third of the abdomen and is produced backward medially, the 

 tip being broadly truncate. Following the first segment is a membran- 

 ous area. The second tergite is divided medially into two plates 

 and the third likewise into two plates which are widely separated. The 

 first segment bears numerous short spines on its face and two clusters 

 of long, stiff spines at the apex. Second segment likewise with numcr- 



