CATALOGUE OF NORTH AMERICAN DIPTERA. 237 



LOEW, Neiie Beitrage, in, 29, notes. 



Middle States O. S. ; N. J. Smith Cat.; Fla. Johnson. 



ater COQUILLETT, Trans. Amer. Ent. Soc., xxi, 108 (Thlipsogaster). La. 



WILLISTON, Psyche, vni, 331, refers to Bombylius, and changes name to 



coquilletti on account of preoccupation; oc. in Mex. ; Biologia, Dipt, i, 



286, oc. in Guerrero, Mex. 

 syndesmus COQUILLETT, Trans. Amer. Ent. Soc., xxi, 108 (Thlipsogaster). S. 



Cal. 

 WILLISTON, Psyche, vni, 331, oc. in Kans. (Bombylius'}. 



Note. As Mr. Coquillett assures me very positively that the two pre- 

 ceding- species do not belong to Bombylius, while apparently also admit- 

 ting that they differ from Thlipsogaster, I am compelled to place them 

 provisionally as an appendix to Bombylius. 



HETEROSTYLUM. 



MACQUART, Dipt. Exot., Suppl. in, 35, 1848. 



OSTEN SACKEN, West. Dipt., 256, 1877 (Comastes) ; Biologia, Dipt., i, 151, 



1886 (id.). 

 ferrugineum FABRICIUS, Syst. Antl., 132 (Bombylius'). West Indies. 



WIEDEMANN, Auss. Zw., i, 334 (id.). West Indies? and Brazil. 

 OSTEN SACKEN, Cat., 238, oc. at St. Thomas, and gen ref. (Comastes). 

 pallipes BIGOT, Annales, 1892, 361. Hayti. 



robustum OSTEN SACKEN, West. Dipt., 256 (Comastes). Texas, Mexico. 

 rufum OLIVIER, Encycl. Meth., i, 327 (Bombylius). West Indies. 



WIEDEMANN, Zool. Mag., in, 46; Dipt. Exot., 164; Auss. Zw., i, 335 (all 



Bombylius basilaris} . Brazil. 

 LOEW, Neue Beitr., in, 29, syn., etc. (Comastes). 



sackeni WILLISTON, Dipt, of Death Val. Exped., 255 (Comastes}. Argus Mts., 

 Cal. 



ANAST(ECHUS. 



OSTEN SACKEN, West. Dipt., 251, 1877. 



nitidulus FABRICIUS, Ent. Syst., iv, 409; Syst. Antl., 132 (Bombylius} .Europe. 

 MEIGEN, Klassification, 189; Syst. Beschr., 11, 154 (id.). 

 SCHINER, Fauna Austr., i, 63 (Systocchus). 

 OSTEN SACKEN, West. Dipt., 252 (barbatus). Cheyenne, Wyo. ; Cal.; 



Col. ; Mass. 

 COQUILLETT, Trans. Amer. Ent. Soc., xxi, no, syn. of barbatus compared 



with European specimens. 

 Beulah, N. M. Skinner (barbatus). 



SYSTCECHUS. 



LOEW, Neue Beitr., in, 34, 1855. 



OSTEN SACKEN, West. Dipt., 250, 1877. 



RILEY, 9th Mo. Report, 96, undet. larva in egg-masses of the Rocky Moun- 

 tain Locust; figured, etc. 

 candidulus LOEW, Cent., iv, 51. Wis. 



OSTEN SACKEN, West. Dipt., 253. 111. and Kans. 

 oreas OSTEN SACKEN, West. Dipt., 254. Webber L., Cal. 



