DIPTERA. 261 



$ . Front of nearly equal width ; callosity quadrilateral, shining mahogany-coloured, with a slender 

 prolongation above. Basal joint of antennae in part red. Palpi with white and black hairs. Sides of 

 abdomen more broadly red. Length 14-15 millim. 



Hab. Mexico, Tepetlapa in Guerrero (H. II. Smith), Santiago Iscuintla in Jalisco 

 {Schumann). 



Two specimens. 



17. Tabanus fur, sp. n. 



2 . Front a little wider above, opaque ochraceous ; callosity rather small, shining reddish. Supra-antennal 

 space opaque, of the same co]our as the front. Antennae dark red; attenuated portion of the third joint 

 black, a little shorter than the basal annulus, the latter with a small vertical process above. Face white, 

 with white hair. Palpi, for the most part, with short black hair. Eyes bare. Mesonotum deep brown, 

 slightly pruinose, with short, recumbent white hairs forming indistinct stripes ; ante-alar callosity reddish. 

 Pleurae white, with white hair. Abdomen reddish-brown, the tip blackish, not at all shining ; in the 

 middle with a narrow continuous white stripe, reaching nearly to the tip ; on either side with a rather 

 broader continuous white stripe reaching on the third segment ; narrow lateral margins of the abdomen 

 light yellow, with white hair. Wings hyaline ; first and fourth posterior cells broadly open ; second 

 submarginal cell not appendiculate. Legs yellow, the upperside of the front femora, the distal portion of 

 the front tibiae, the immediate tip of the hind tibiae, and all the tarsi, black or blackish. Length 

 13 millim. 



Hab. Mexico, Misantla (F. D. Godman). 

 One specimen. 



18. Tabanus haemagogus, sp. n. 



cJ. Eyes bare, the upper facets not much larger than the lower, the areas not sharply limited. Face 

 ochraceous-yellow, the palpi of nearly the same colour. Antennas red, the attenuate portion of the third 

 joint black ; basal portion of the third joint rather narrow, angulated above, longer than the attenuated 

 portion. Mesonotum deep brown, almost black, lightly pruinose. Abdomen brownish-red, darker at the 

 extremity ; immaculate, or with a black spot in the middle of the second segment and another at 

 the base of the first segment. Wings brown, lighter distally and behind ; all the posterior cells open ; 

 second submarginal cell not appendiculate. Legs brownish-red and brown, the tarsi darker, the base of 

 the front tibiae lighter. 



5 . Front of moderate width ; callosity shining, reddish. Third joint of antennae somewhat broader. Thorax 

 and abdomen of about the same colour, red, immaculate ; the abdomen sometimes yellow. Length 

 11-13 millim. 



Hab. Mexico, Temax in Northern Yucatan [Gaumer). 

 Six specimens. 



19. Tabanus filiolus, sp. n. 



? Tabanus rufiventris, Macq. Dipt. Exot. i. 1, p. 141 l (nee Wiedem.). 



5 . Red or brownish-red throughout, the tip of the antennae, the end of the front tibiae, and the greater part 

 of the tarsi, black or blackish. Front rather narrow, of equal width ; callosity red, continued above as a 

 slender line. Basal portion of the third antennal joint longer than the annulate portion, angulated or 

 slightly toothed above. Face yellowish. Palpi rather slender, light yeDow, with white hairs. Abdomen 

 usually of a lighter colour than the thorax, sometimes blackish at the tip. Wings yellowish or brownish ; 

 second submarginal cell not appendiculate ; first posterior cell broadly open. 



