Dec, 1906.] North American Species of Tabanus. 23 



rather conspicuous brown stigma and brownish margins to 

 some of the longitudinal veins near the apex; fork of the third 

 vein with a short appendage; posterior femora wholly red; 

 abdomen fuscous with three stripes yellowish-white in color, the 

 lateral ones not usually reaching beyond the third segment. 



Female: Length 10-14 mm., head wider than the thorax; 

 front slightly narrowed below, clothed with yellow pollen, 

 callosity shining nearly black, shghtly narrower than the front, 

 nearly square with a very narrow, sometimes unconnected, line 

 above ; face clothed with white pubescense ; thorax dark, in well 

 preserved specimens with more or less greenish reflecting pollen 

 and scattering, short, black hairs. 



Male: Leagth 1-1 mm., head decidedly broader than the 

 thorax with a large area of very large facets; face and breast 

 clothed with white pubescense; disc of the thorax with rather 

 dense erect, nearly black hairs wiiich are much longer than in 

 the other sex. 



The types of the species were taken at Puerto Barrios, 

 Guatemala, March 4, 1006, numerous other specimens from 

 Gualan and Panzos in Guatemala, Belize in British Honduras 

 and Puerto Cortez in Spanish Honduras. 



Tabanus carneus Bellardi. General color reddish; antenna 

 red with the annulate portion of the third segment slightly 

 darker; wing hyaline, stigma brown, fork of the third vein 

 without an appendage; posterior femur entirely red; abdomen 

 red, a little darkened at the extreme apex, three yellowish-white 

 dorsal stripes, the middle one plainly marked for the whole 

 length, but the lateral ones almost obsolete. 



Female: Length 11-13 mm., thorax above reddish, sparsely 

 clothed with gray pollen and short dark hairs. 



Male: Length 13 mm., head wider than the thorax, with a 

 distinct area of enlarged facets on each eye; thorax above red- 

 dish, rather densely clothed with erect brown pile and a small 

 amount of gray pollen. 



Habitat: Specimens are at hand from Frontera, Mexico and 

 from Puerto Barrios, Guatemala. 



Tabanus conterminus Walker. Before describing this species 

 it is well, perhaps, to offer an explanation for using this name. 

 When the males of the species of the Atlantic coast are brought 

 together it is certain that there are two species in what has gone 

 under the name of T. nigrovittatus ever since Osten Sacken 

 published his Prodrome of a Monograph of the Tabanidae of the 

 Eastern United States. Having the males separated I studied 

 to locate their females and believe I have succeeded. Walker's 

 description appears to fit the species very well for color and 

 exactly for size, so the name is adopted until it can be proven 

 just what the proper solution of the matter is. 



