I40 Annals Entomological Society of America [Vol.11, 



LIST OF THE SPECIES. 



Group Asilus. 



sericeus Say, Jour. Acad. Sci. Phil., Ill, 48. Compl. Works II, 63. Wiede- 

 mann, Auss. Zw. I, 429. Williston Trans. Am. Ent. Soc. XI, plate II, 

 figure 10. Kan. Univ. Quar. II, 68. Riley Mo. Rept. II, 123. Harris 

 Ins. Inj. Vcg. 605. 

 herminius Walker, List II, 410. 



midas Brauer, Sitzungsb. Kaiserl. Akad. Wissen.sch. XCI, 387, plate II, figure 

 1. Williston, Kan. Univ. Quart. II, 69. Osten Sacken, Biologia, 

 Diptera I, 209. 



Grou]) Rhadiurgus. 



leucopogon Williston, Kans. Univ. Quart., II, 75. 

 cacopilogus new species. 



Group Philonicus. 

 arizonensis Williston, Kan. Univ. Quart. II, 76. 

 fuscatus new name. 



()bscin-us Hine, Ohio Naturalist VII, 117. Naine preoccupied, 

 limpidipennis new species. 



arizonensis as determined by Hine, Ohio Naturalist VII, 116. 

 rufipennis Hine, Ohio Naturalist VII, 117. 



truquii Bellardi, Saggio II, 52. Van der Wulp, Tijdischr. v. Ent. XXV, 116. 

 • WilHston, Biologia, Diptera I, 328. 



taeniatus Bellardi, Saggio II, 55. Synonymy by Williston. 



plebeius Osten Sacken, Biologia, Diptera I, 209. Synonymy by Williston. 

 tuxpanganus Bellardi, Saggio appendix 22. Hine, Ohio Naturalist VII, 118. 



Group Nigrasilus. 

 nitidifacies Hine, Canadian Ent. XL, 202. 



Group Antiphrisson. 

 astutus Williston, Kans. L^niv. Quart. II, 70. 



Group Eutolmus. 



lecythus Walker, List II, 451. 



femoralis Macquart, Diptera Exot. Supplement II, 45. 



Group Machimus. 



avidus Van der Wulp, Tijdschr. v. Ent. XII, 82. 

 occidentalis new species. 



tenebrosus Williston, Biologia, Diptera I, 328. 

 griseus Hine, Ohio Naturalist VII, 29. 



Group Neoitamus. 



affinis Williston, Kan. Univ Quart. II, 73. 

 coquillettii new species. 

 brevicomus new species. 

 orphne Walker, List II, 456. 



auceps Van der Wulp, Tijdschr. v. Ent. XII, 84. 



aeneobarbus Loew. This name was sent to Osten Sacken in a letter and 

 so far as I can find, no description was ever written. 



distinctus Williston, Kansas Univ. Quart. II, 73. 

 terminalis new species. 

 flavofemoratus new name. 



flavipes Williston, Kansas Univ. Quart. II, 72. Name preoccupied. 



Group Stilpnogaster. 



auriannulatus Hine, Ohio Naturalist VII, 29. 



Groxip Heligmoneura. 



angustipennis new species. 

 latipennis new species. 



