AMERICAN DIPTERA. 75 



75. ]fla»$icera sp. ? 



Southern Illinos (Robertson) ; one specimen. This cliiFers from 

 the genus Madcera in its elongate, rather narro\^ed abdomen with 

 tlie macrochsette only marginal, in the general elongate form, and in 

 the frontal bristles descending on sides of face nearly as low as the 

 vibrissse. It will probably form a new genus. 



76. Olivieria n. sp. 



Southern Illinois ( Robertson") ; one male I refer to this genus. It 

 agrees with Schiner's description of Olivieria /m. alL points except 

 following : Eyes very distinctly hairy, instead of thinly so ; proboscis 

 a little longer than height of head, palpi a little thickened terminally ; 

 first abdominal segment hardly shortened ; apical cell open. 



77. NeiiiorteH n. sp. 



Southern Illinois (Robertson) ; three males and two females. This 

 species differs from N. aldrichi (descr, as a Hystricia) in having the 

 anal segment rufous, and sides of other segments frequently so as 

 well. It differs from N. varieguta v. d. AV. in having the third an- 

 tennal joint hardly longer than the second. From the descrij)tion 

 of N. leucania' Kirkp., it differs only in the same character — the 

 length of the third antennal joint, which in that species is said to be 

 two and a half to three times as long as second. The antennae vary 

 from wholly black to black with the second joint clear rufous. 



78. BTemorsea n. sp. 



Colorado (Gillette) ; one bred from Ecpantheria jyermaculata. 



79. Mystacella n. sp. 



Colorado (Gillette) ; one specimen bred from Acronijcta ameri- 

 cana (.^) ; and another from Pyrrharctia isahella. 



80. Hyphaiiti'opliaga hyphantriae Towns. 

 Coloraxlo (Gillette) ; one bred from Yiuiessa milbertii. 



81. HypliHutrophaga n. sp. 



Colorado (Gillette) ; two specimens bred from Vanessa milhertii. 

 This is very near to, but different from, H. hyphantrim Towns., and 

 is probably a new species. 



82. Exorista tlieclaruiu Scudd. 



E. chrysoplumi Towns., " Ent. News," 1891 (December), pp. 197- 

 198, is a synonym of this species. 



MYOBIA Eob. Desv. 



General chanirferx. — Yellowish species, considerably resembling 



Clytia, but readily distinguished by the very large })alpi. Belongs 



in Thryptoceratinse. Head nearly rectangular in profile ; front 



rather prominent, about one-third width of head, frontal bristles 



TKANS. AM. ENT. SOC. XXII. MARCH, 1895 



