THE CANADIAN ENTOMOLOGIST. 289 



yellowish, whereas all the Mexican males that I have seen have the wings 

 distinctly whitish with no yellowish tinge. Bellardi gives the length of his 

 specimen ( 9 ) as 8 mm., which is much longer than 9 orhatus as given 

 by Say (^5 inch = less than 5 mm.), and Wiedemann (2 lines = about 4 

 mm.). The median cross-vein of the wing is always present in both sexes ; 

 it is often situated in both sexes exactly at the furcation of the vein, at 

 other times being just a little distance before the furcation. 



62. Plecia bellardii Towns., n. nom. 



Sym. vittata Bell. (nee. Wied.) preocc. 



Tepic. — Eight cfs and three 9 s, Nov. Aside from the genital 

 characters the female.s may be known by the eyes not being contiguous 

 but well, separated, the front being fully as wide as the eyes. Bellardi 

 says that the 9 s are larger than the o^s, and have the wings longer and 

 wider. In my specimens there is hardly any difference in size of body or 

 wings, except that the abdomen of the 9 niay be slightly larger. Length 

 of body about 7 mm., of wing about 9 mm. 



I identify these specimens with Bellardi's (not Wiedemann's) Plecia 

 vittata, which Schiner (Nov. Reise Dipt., p. 22), makes a synonym of 

 plagiat a. I believe that this synonymy is incorrect. If vittata Bell, is 

 distinct, as I believe, it must be called by another name, as vittata is 

 preoccupied by Wiedemann. I have therefore proposed the name bellardii. 



There is no brownish tinge to the wings, which vary from a dense to 

 a diiute black, with an iridescent greenish to violet reflection in oblique 

 lights. Wiedemann describes the darker parts of the wings oi plagiat a as 

 blackish brown, Schiner gives no 'reason whatever for placing vittata Bell, 

 as a synonym oi plagiat a. 



Tabanid/e. 



63. Fangonia tepica?ia Towns., n. nom. 



Syn. F. basilaris Wd., Aus. Zweifl., II, 621 (preocc). 



Tepic. — One Ç , Oct. I believe this to be F. basilaris Wd., Aus. 

 Zweifl., II, p. 621 (not basilaris Wd., Aus. Zweifl., I, pp. 554-5, and not 

 wiedema?mi Bell., Saggio Ditt. Mess., I, p. 48). Von Roder has pointed 

 out (Dipt, gesam. Sud-Amerika von A. Stiibel, p. 7) the differences in the 

 wing coloration of basilaris (Wd., Aus. Zw., I, pp. 554-5) and wiede- 

 7nanni Bellardi. In the latter the black of wings is confined to the ex- 

 treme base, and extends only as far as the cross-veins at base of basal cells. 

 In the former it extends to the cross-veins, closing the basal cells, and 

 takes up the whole basal third of the wing. Roder's specimen oî basilaris 

 was from the Rio del Cinto (Ecuador), about 5,000 ft. 



