238 BULLETIN UNITED STATES GEOLOGICAL SURVEY. 



ANTHRAX. 



In this genus, I abstain almost entirely fi-om describing the numerous 

 new species which I have from California and the Colorado region. 

 Such a work should be done in connection with a critical examination 

 of the previously described species from the Atlantic States, and my 

 material from those States is entirely insufficient for that puri)ose. I 

 subjoin a list of all the described species from Xorth America north of 

 Mexico. The rough grouping which I have attempted will facilitate, 

 I hope, the task of identification. 



A. Wings hyaline ; costal cell but little darker : 



albipectiis Macq., 3e suppl., 34. — North America. 

 *alternata Say, Compl. Wr., ii, 61. — Middle States. 



? SYi^.—consanguinea Macq., D. E,, ii, 1, 69. 



'^connexa Macq., 5e suppl., 76. — Baltimore. 



gracilis Macq., D. E., ii, 1, 76. — Philadelphia. 



hypomelas Macq., D. E., ii, 1, 76. — North America. 

 ^lateralis Say, Compl. Wr,, ii, 59. — Middle States. 



mucorea Lw., Centur., viii, 43. — Nebraska. 

 *scrohiculata Lw., Centur., viii, 39. — Illinois. 



stenozona Lw., Centur., viii, 40. — Illinois. 



molitor Lw., Centur., viii, 42. — California. 



B. Wings hyaline; costal cell darlc iroicn: 



*fiilviana Say, Compl. Wr., i, p. 253. — Northwestern Territory (Say). 



* nigricauda Lw., Centur., viii, 38.— Massachusetts 5 White Mount- 



ains. 



C. Wings icith the proximal half dark brown or black [like fulvohirta, 



SINUOSA) : 

 albovittata Macq., 4e suppl., 113. — N. A. (^). 



* celer Wied., i, 310. — Kentucky. 



edititia Say, Compl. Wr., ii, 353. — No locality given. 

 floridana Macq., D. E., 4e suppl., 112. — Florida. 

 *fulvohirta Wied., i, 308. — Atlantic States. 



Syn. — conifacies Macq., 4e suppl. 



separata Wk., Dipt. Saund., 177. 



(l)incisa Walker, Dipt. Saund., 187. — North America. 

 (?) cedens Walker, Dipt. Saund., 190. — United States. 



palliata Lw., Centur., viii, 32. — Illinois. 



parvicornis Lw., Centur., viii, 36. — Illinois. 



sagata Lw., Centur., viii, 34. — Matamoras. 



* sinuosa Wied., i, 301. — United States. 



Syn. — coneisa Macq., D. E., ii, 1, 68. 



nycthemera Macq., D. E., ii, 1, 67. 

 (?) assimilis Macq., suppl., i, 114. 



vestita Walker, List, ii, 258. — Nova Scotia. 

 curta Lw., Centur., viii, 35. — California. 

 diagonalis Lw., Centur,, viii, 33. — California. 



