APPENDIX. 



During the printing of this work there have been a number 

 of genera added to the fauna of the region included within its 

 limits. I give them as they should be intercalated in the 

 tables, together with some that have been omitted or over- 

 looked, though previously known. The student is requested 

 to make marginal references wherever they should be inter- 

 calated. 



LEPTINJE, p 44. 

 2. Front tibiae with a single spur. ....... 2a 



Front tibiae with two spurs, etc. . . . TRIPTOTRICHA Loew. 



2a. Antennal style jointed ; fourth posterior cell closed (Central America 



and West Indies) PHENKUS Walker. 



Antennal style not jointed; fourth posterior cell open, or wanting. 



DIALYSIS Walker. 

 STRATIOMYIN.E, p. 48. 



6. Antennas much elongated, 7 



Third antennal joint oval, with a terminal arista. NOTHOMYIA Loew. 



7. Face produced conically downward. . ... MYXOSARGUS Brauer. 

 Face not produced conically downward. . . . . 8 



8. Third joint of the antennae composed of six closely united annuli, with- 



out style or arista; wings expanded distally (Central and South 



America) ANALCOCERUS Loew. 



Third antennal joint composed of seven closely united annuli, without 

 style or arista; wings not expanded distally (Central America and 



East Indies) CAMPEPROSOPA Mat-quart. 



These last two genera belong among the Sarginae, but have no terminal 

 arista. 



PACHYGASTKIN^E, p. 48. 

 1. Antennae situated near the oral margin. . . . . . . 2 



Antennae situated near the middle of the head in profile. . .la 

 la. Arista with a short, dense plumosity (Central America and Polynesian 



Islands). LOPHOTELES Loew. 



Arista bare. . . 3 



