DICRANOMYTA. 65 



is a short distance anterior to the origin of the prjefurca; the subcostal 

 cross-vein is at a short distance from the tip of the auxiliary vein. 

 Long. corp. 0.3 — 0.35. 



Syn. Dicranomyia jnidica 0. Sacken, Proc. Ac. Nat. Sc. Phil. 1859, p. 212. 



There is not much to add to the diagnosis; the stigma is 

 scarcely apparent ; the auxiliary vein joins the costa a little 

 before the origin of the prsefurca ; the cross-vein is not far from 

 its tip (at a distance shorter than half the length of the stigma) ; 

 the antennas are yellow. 



Hab. Illinois (Kennicott). 



At the time when I prepared the original description of this 

 species, I had two male and four female specimens before me. 



6. D. rostrifera, n. sp. % and 9 . — Fusca, thoracis vitta ohscuriori, 

 rostro et proboscide elongatis, fuscis ; antennis nigro-fuscis ; veUc-e aux- 

 iliaris apex prsefurcJB initio anterior ; prsefurca brevi ; cellula discoidali 

 aperta. 



Brown, the thorax with a darker stripe ; rostrum and proboscis elongated, 

 brown ; antennae brown ; the tip of the auxiliary vein is anterior to the 

 origin of the prsefurca, the latter short ; discal cell open. Long. corp. 

 0.2—0.25. 



Head, including rostrum, palpi, and antenna? fuscous ; rostrum 

 and proboscis unusually prolonged, being almost as long as the 

 head. Thorax fuscous, sericeous with yellowish above and with 

 a dark brown stripe in the middle ; sericeous with cinereous on 

 the pleura ; scutellum tawny, metathorax brown. Haltcres with 

 an infuscated knob, stem pale. Abdomen brown ; genitals sub- 

 ferruginous. Feet dark tawny,, coxa? pale. Wings hyaline ; 

 stigma short oval, pale ; the tip of the auxiliary vein is anterior 

 to the origin of the second longitudinal vein by about half the 

 length of the stigma or more ; the subcostal cross-vein is at 

 about an equal distance from the tip of the auxiliary vein ; the 

 first longitudinal vein has the marginal cross-vein close by its 

 tip ; the pra^furca is short, not much longer, if longer at all, thaa 

 the distance between the origin of the third longitudinal vein 

 and the small cross-vein ; discal cell open. 



Hab. 'New York ; three male, one female specimen. The 

 venation of this species is exactly like that of L. brevivena. I 



5 Ju]y, 1868. 



