228 ME. P. CAMERON ON [Mar. 19, 



median nervure is received in front o£ ancl not far from the 



transverse basal ; the 2nd recurrent nervure is received at a 

 slightly greater distance than the length of the first transverse 

 cubital, not at double, or more than double, the distance as in 

 Ophion. In the hind wings the transverse median nervure is 

 broken shortly belosv the middle. Median segment reticulated, 

 except at the base, where there is a transverse keel ; its base is 

 widely and deeply depressed. Abdomen more than three times 

 the length of the thorax. 



This genus has greater affinity with Enicospilus than with Opliion. 

 Fi'om the former it may be known by the absence of the horny 

 points in the fore wings and by the transverse median nervure in 

 hind wings not being broken far below the middle ; from Ophion 

 it may be separated by the disco-cubital nervure not having a 

 stump of a nervure and broadly rounded, by the apical abscissa o 

 the radius being broadly curved upwards, and by the swollen base 

 of the radius. 



Leptophion longiventeis, sp. nov. 



Luteus; segmento mediali reticulato ; alishyalmis,nervis stigmate- 

 que nigris. $ . 



Long. 21 7nm. 



Antennae dark luteous. Head pallid yellow ; the face distinctly 

 and closely punctured ; on the top, in the middle below the 

 antennse, is a stout smooth keel or elongated tubercle. Clypeus 

 roundly convex, smooth, and sparsely punctured. Mandibles broad, 

 smooth ; the apical teeth black and rounded at the apex, they 

 are almost equal in length. The prothorax is paler, more yellowish 

 in colour then the rest; the scutellum is minutely punctured ; the 

 lateral keels are prominent only at the base ; the apex is finely 

 shagreened, almost striated. The depression at the base of the 

 median segment is wide and deep ; in the middle there are some 

 stout longitudinal striations ; the central two form a V-shaped area; 

 the space between this and the curved transverse keel is smooth ; 

 the rest of the segment is closely and coarsely reticalated, except 

 the lower half of the metapleurse. Pi'o- and mesopleurse smooth 

 and shining. Wings clear hyaline; the stigma and nervures black; 

 the stigma is pale at the base : the basal abscissa of the radius is 

 thickened ; the transverse median nervure is almost interstitial. 

 The tarsi are minutely and thickly spinose ; the tibiae are thickly 

 covered with short pubescence. The abdomen is paler than the 

 thorax ; apical three segments are brownish black. 



Mr. W. H. Ashmead (Proc. U.S. Nat. Museum, xxiii. p. 86) 

 describes a genus Pleuroneurophion which has the radius swollen 

 towards the base as it is in this genus and in Enicospihis ; but it 

 has a short nervure on the disco-cubital nervure and the transverse 

 cubital nervure in hind wings is broken below the middle at the 

 basal third, or at least far below the middle. The abdomen in our 

 species is longer than usual compared with the length of the thor 

 The eyes are very large and prominent. The subdiscoidal nervure 



