86 DIPTERA. 



ONCOMYIA. 



Occemyia, Robineau-Desvoidy, Dipt. des environs de Paris, Myodaires, p. 50 (1853). 

 Thecophora, Rondani, Dipt. Ital. Prodr. i. p. 58 (1856). 



Oncomyia, Loew, Centur. vii. no. 73, nota, in Berl. ent. Zeitschr. 1866, p. 41. 



1. Oncomyia abbreviata. 



Oncomyia abbreviata, Loew, Centur. vii. no. 73, in Berl. ent. Zeitschr. 1866, p. 41 l ; Wilhst. 

 Trans. Conn. Acad. vi. pp. 97, 393 2 . 



Eab. United States, New England States 2 , California 2 , Washington 1 2 .— Mexico, 

 Ciudad in Durango 8100 feet (Forrer). 



A single specimen from Durango, which I cannot separate from others from Con- 

 necticut. I must confess, however, that I am not satisfied with the characters used 

 to distinguish the American species of this genus. 



2. Oncomyia loraria. 



Oncomyia loraria, Loew, Centur. vii. no. 74, in Berl. ent. Zeitschr. 1866, p. 41 1 ; Wilhst. 

 Trans. Conn. Acad. vi. pp. 98, 393 2 . 

 Hab. United States, New Hampshire \ New England States 2 , California 2 .— Mexico, 

 Xucumanatlan 7000 feet, Amula 6000 feet, both in Guerrero (H. H. Smith). 



Two examples from Guerrero, agreeing well with the description, and with specimens 

 from Connecticut and Calif ornia. 



Fam, PIPUNCULIDiE *. 



PIPUNCULUS. 



Pipunculus, Latreille, Hist. Nat. Crust. et Ins. iii. p. 463 (1802). 



Synojpsis of the Central-American species. 



1. Last section of the fourth longitudinal vein with a stump of a vein; 



third antennal joint ohtuse beneath ; femora with spinous bristles 



below elegantulus, sp. n. 



Last section of the fourth longitudinal vein sinuous, without stump . 2. 



2. Small cross-vein distinctly beyond the tip of the auxiliary vein; 



penultimate section of the fourth longitudinal vein not twice the 

 length of the antepenultimate section; femora in part black, 



without bristly spines below flavitarsis, sp. n. 



Small cross-vein before or opposite the tip of the auxiliary vein ; 



* By S. W. Willistox. 



