DIPTEKA. 259 



Tabanus quadripunctatus (p. 48). 



Tabanus quadripunctatus, Willist. Kans. Univ. Quart, iii. p. 195 \ 



To the localities given, add :— Mexico, Acaguizotla and Amula in Guerrero (E. E. 

 Smith), Jaral in Guanajuato (Schumann). — Beazil, Eio Janeiro K 



1(a). Tabanus aurantiacus. 



Tabanus aurantiacus, Bellardi, Saggio etc. i. p. 67, t. 2. fig. 9 . 



Eab. Mexico, Guadalajara, San Bias (Schumann), Orizaba 1 . 



Three specimens. The broad orange-coloured sides of the first four abdominal 

 segments, and the wings with blackish spots on the cross-veins and brown clouds along 

 the longitudinal veins, make this handsome species easily recognizable. 



4. Tabanus caliginosus. 



Tabanus caliginosus, Bellardi, Saggio etc. i. p. 68, t. 2. fig. 10 \ 

 ? Tabanus ebrius, O. Sack, antea, p. 49 2 . 



To the localities given, add :— Mexico \ Atoyac in Vera Cruz (Schumann), Omealca 

 (M. Trujillo). 



This species will be best recognized by the very narrow front and palpi, and the 

 markings of the wings, which are brown, with three hyaline spots, the largest over 

 the proximal cross-vein, a small one across the outer cross-veins, and another at the 

 furcation of the third vein ; the tip of the wing and the anal angle are less deeply 

 coloured. Bellardi's figure does not well represent it. 



T. ebrius, O. S., seems only to differ in the more washed-out markings of the wings. 



6 (a). Tabanus atratus. 



Tabanus atratus, Fabr. (For the synonymy, see Osten Sacken's Catalogue of N. Am. Diptera, 

 p. 57.) 

 Eab. Easteen United States. — Mexico, Chihuahua (Kerr). 



Four female specimens, agreeing with others from the United States. 



9. Tabanus chionostigma (p. 54). 



To the locality given, add : — Mexico, Teapa in Tabasco (E. E. Smith), 



A single female specimen. The abdomen is black, not brown, as is also the 

 mesonotum, save the lateral margins. The first and second abdominal segments have 

 a minute yellow spot in the middle behind. The tibiae are hardly perceptibly yellowish 

 proximally. Notwithstanding these discrepancies, the species is so strongly marked 

 that there can be no question of the identity. 



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