238 BULLETIN UNITED STATES GEOLOGICAL SURVEY. 



ANTHRAX. 



In this genus, I abstain almost entirely from 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 purpose.. I 

 subjoin a list of all the described species from North 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 ; 



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

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



? Syn.— 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. 

 Hateralis Say, Compl. Wr., ii, 59.— Middle States. 



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

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



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



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

 B*. Wings hyaline; costal cell dark brown: 



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



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



ains. 

 C. Wings with 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. — com fades Macq., 4e suppl. 



separata Wk., Dipt. Saund., 177. 



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

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



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



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



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



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



Syn. — concisa 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., Ceutur., viii, 33.— California. 



