in the Collection of W. JV. Saunders^ Esq. 273 



along the costa ; fore branch of the cubital vein emitting a fork 

 near its base ; hind branch joining the first externo-medial vein 

 at some distance from the border ; sub-anal joining the anal at 

 some distance from the border ; halteres with whitish tips. 



Length of the body (5 lines; of the wings 14 lines. 



Mexico. 



Genus Tabanus, Linn. 

 Tabaniis dorsifer. " 



Fcem. — Glauco-cinerens, capite albido pilis subtus albis, callo 

 nigro postice lato antice sub-quadrato ferrugineo, palpis 

 albidis, antennis parvis, thoracis vittis quinque pectoreque 

 albidis, abdomine maculis lateralibus ferrugineis, segmen- 

 torum marginibus maculisque quatuor trigonis lateralibus 

 albis, tibiis fulvis apice nigris, alis cinereis, halteribus apice 

 albidis. 

 Allied to T. dorsiger, Wd. Female. — Glaucous-cinereous: 

 head whitish, with white hairs beneath ; callus black, broad, 

 attenuated in front, and joining a ferruginous shining sub-quad- 

 rate spot; proboscis black; lancets luteous ; palpi whitish; an- 

 tennss black, small ; third joint slightly dilated and angular ; 

 thorax with five whitish stripes ; pectus whitish ; abdomen with 

 dull ferruginous spots on each side; hind borders of the seg- 

 ments white ; a large triangular white spot on each of the third 

 and fourth segments ; legs black ; tibiae tawny, with black tips ; 

 wings cinereous ; veins black ; iore branch of the cubital vein 

 obtusely angular at its base, not emitting a fork; sub-anal vein' 

 joining the anal at some distance from the border ; halteres with 

 whitish knobs. 



Length of the body 6^ lines ; of the wings 13 lines. 

 Mexico. 



Tahanus comm'ixlus, 



Fcem. — Fuscus, capile cervino subtus albido pilis albis, callo 

 gracillimo antice dilatato quadrato, palpis albidis, antennis 

 fulvis apice nigris, thorace cinereo, jiectore albido pilis albis, 

 abdomine vittis tribus (lateralibus macularibus) testaceis, 

 ventre pallide testaceo, pedibus testaceis, tarsis femoribus 

 basi tibiisque apice nigris, alis cinereis, venis transversis vix 

 nebulosis, halteribus albis. 



Allied to T* rujiventris, Macq., but with a longer and narrower 

 abdomen. Female. — Brown: head fawn-colour, with a very slender 



