170 D. W. COQUILLETT. 



The following species of Anthrax, said to occur in the United 

 States, are unknown to me, except from the descriptions, which are 

 not explicit enough to enable me to give them a place in the accom- 

 panying table : eostata Say, cedens Walk., diagonalis Ijoevf,fnliginosa 

 Loew, mucorea Loew, and melasoma Van der Wulp. The form which 

 I described in my monograjjh as mucorea Loew, is not that species, 

 as Dr. Hagen kindly informs me after comparing a specimen with 

 Loew's type in the Cambridge Museum ; I have, therefore, rede- 

 scribed this form under the name of lauscaria n. sp. Anthrax curta 

 Loew, pertusa Loew, and pcecilogaster O. S., are also unknown to me 

 in nature, and I have given them a place in the accompanying table 

 according to the published descriptions. I have also been unable to 

 identify Walker's Anthrax vestita, from Nova Scotia, with any species 

 in my collection. With these exceptions, all of the species of An- 

 thrax (sens, strict.) known to me to occur in this country North of 

 Mexico, are represented in the accompanying table. For the sake 

 of ready reference, I have given each species the same number it 

 bears in my monograph, while the additional species here introduced 

 are numbered consecutively with them. 



Table of Species. 



1. — Anal cell wholly pure hyaline; wings hyaline, sometimes marked with 



brown; scutellum wholly black, except in adumbratn 2. 



Anal cell more or less brown or smoky ; wings largely or wholly brown or 



black 35. 



2. — Wings, except sometimes costal, base of marginal and first basal cells, wholly 

 hyaline ; sometimes a brown cloud on veins at bases of first submarginal 

 and first posterior cells, but never in any other portion of the wing. ..3. 

 Wings marked with brown on other parts than those above mentioned, es- 

 pecially on the cross-veins at bases of third and fourth posterior cells..27. 



3. — Claws of front tarsi noticeably smaller than those of the other tarsi 5. 



Claws of front tarsi nearly or quite as long as those of the other tarsi ; front 



tibise provided with bristles 4. 



4. — Face greatly retreating below; ground color of the face, antennae and legs 

 black ; body slender, abdomen not abundant bushy pilose on the sides. 



7c. gracilis. 

 Face much produced below: ground color of face, first two antennal joints 

 and legs reddish, base of third antennal joint elongate-conical. 



8. mercedis. 



5. — Abdomen provided with black tomentum 9. 



Abdomen destitute of black tomentum; front tibiae destitute of bristles; 

 small species not exceeding eight mm. in length 6. 



