1919] I Hine: Genus Erax 105 



LIST OF NORTH AMERICAN SPECIES OF ERAX WITH SYNONYMY. 



The barbatus Group. 

 armatus new species. 

 barbatus Fabricius, Syst. Antl., 169, (Dasypogon), 1805. 



pogonias Wiedemann, Dipt. Exot., 198, (Asilus), 1821; Auss. Zw. I, 460, 

 (Asilus), 1828. 



alhiharbis Macquart, Dipt. Exot. I, 2, 118, 1838. 



cinerascens Bellardi, Saggio, II, 39, tab. II, fig. 10, 1861. 



tricolor Bellardi, Saggio, II, 40, tab. II, fig. 12, 1861. 



furax Williston, Trans. Am. Ent. See. XII, 67, ISSo. 

 bicolor Bellardi, Saggio II, 47, 1861. 



bimaculatus Bellardi, Saggio II, 45, tab. II, fig. 11, 1861. 

 cingulatus Bellardi, Saggio, II, 41, 1861. 

 grandis new species. 



leucocomus Williston, Trans. Am. Ent. Soc. XII, 69, 1885. 

 quadrimaculatus Bellardi, Saggio, II, 44, tab. II, fig. 13, 1861. 

 sagax Williston, Biol. Centr. Am., Dipt., I, 324, 1901. 

 tagax Williston, Trans. Am. Ent. Soc. XII, 65, 1885. 



similis Williston, Trans. Am. Ent. Soc. XII, 68, 1885. 

 willistoni new species. 

 zonalis new species. 



The aridus group. 



aridus Williston, North Am. Fauna, No. 7, 254, 1893. 



harveyi new species. 



prattii new species. 



snowi new species. 



subpilosus Schaefifer, Jr. N. Y. Ent. Soc, XXIV, 67, 1916. 



The anomalus group. 



anomalus Bellardi, Saggio, II, 32, tab. II, fig. 7, 1861. 

 candidus Coquillett, Can. Ent. XXV, 176, (Efferia), 1893. 

 pernicis Coquillett, Can. Ent. XXV, 175, (Efferia), 1893. 



The aestuans group. 



aestuans Linneaus, Syst. Nat. XII, II, 1007, (Asilus), 1767. 



aestuans Fabricius, Syst. Antl., 164, (Dasypogon), 1805. 



niger Wiedemann, Dipt. Exot., 196; Auss. Zw., I, 460, (Asilus), 1821. 



macrolahis Wiedemann, Auss. Zw., I, 458, (Asilus), 1828. 



aestuans Macquart, Hist. Nat. Dipt., I, 312, (Asilus), 1834. 



incisuralis Macquart, Dipt. Exot., I, 2, 117, 1839. 



bastardi Macquart, Dipt. Exot., I, 2, 117, plate 9, fig. 7, 1839. 



tibialis Macquart, Dipt. Exot., I, 2, 118, 1839. 

 aflfnis Bellardi, Saggio, II, 41, 1861. 



marginatus Bellardi, Saggio, II, 46, 1861. 

 apicalis Wiedemann, Dipt. Exot., 191 (Asilus), 1821; Auss. Zw., I, 443, (Asilus), 

 1828. 



vicinus Maccjuart, Dipt. Exot., Supl. I, 85, 1846. 

 aurimystaceus new species, 

 belfragei new species. 



femoratus Macquart, Dipt. Exot. I, 115, 1838. 



fulvibarbis Macquart, Dipt. Exot., Supl. 3, 28, tab. 2, fig. 13, 1848. 

 haloesus Walker, List II, 405, (Asilus), 1849; List VII, 624, 1855. 

 kansensis new species. 

 loewii Bellardi, Saggio, Appendix. 21, tab. Ill, fig. 17, 1862. 



dolichogaster Williston, Biol. Centr. Am., Dipt. I, 326, tab. 6, fig-. 6, 1901. 

 mexicanus new species. 



