392 HYMENOPTERA. 



Is scarcely interstitial ; the second cellule much longer than the first ; beyond the second' 

 cellule the cubital nervure is obliterated. Legs rather long, the tarsi longer than 

 the tibiae. 



LELUTHIA. 



Head large, scarcely transverse in front, narrowed behind the eyes, the latter oval ; occiput margined. Antennae 

 filiform. Thorax elongated, especially the metathorax, the latter about three fourths the length of the 

 mesothorax. Abdomen sessile, longer than the head and thorax united ; the basal three segments large, 

 longitudinally striolated; suturiform articulation present, straight or curved; the other segments all 

 distinct, not retracted. Wings : three cubital areolets ; first abscissa of the radius longer than the second ; 

 the recurrent nervure recurved before the first transverse cubital nervure ; second humeral cellule shorter 

 than the first discoidal cellule ; anal nervure not interstitial. 



I am not quite satisfied that this genus belongs to the " Cyclostomi ;" there is an 

 incision over the mouth, but the incision can scarcely be said to be semicircular, nor is 

 it so large as in the normal forms of that division. If it belongs to the latter it would 

 come nearest to Bhogas. 



The very obscure incision in the anal region, however, makes me doubt the relation- 

 ship of Leluthia to that genus. 



1. Leluthia mexicana. (Tab. XVI. fig. 2, $ .) 



Nigra, basi flagello antennarum, ore, trochanteribus geniculisque, sordide testaceis ; alis hyalinis, nervis fuscis, 



stigmate nigro. $ . 

 Long. 6 millim.; terebra 4 millim. 



Hob. Mexico, Northern Sonora (Morrison). 



Antennae 28-jointed, as long as the abdomen, almost bare ; second joint about one 

 fourth longer than the third, the latter a little shorter than the fourth. Head closely 

 punctured, bearing some long white hairs. Thorax closely punctured (more strongly 

 so than the head) ; the pro- and mesopleurae strongly longitudinally striolated, except 

 the latter posteriorly, this part being strongly aciculated ; scutellum much wider than 

 long, narrowed obliquely towards the apex, aciculated, the transverse furrow at the base 

 stoutly keeled. Metathorax stoutly longitudinally punctured ; the pleurae more or less 

 reticulated. Sternum aciculated. Abdomen longer than the head and thorax united ; 

 the petiole and second segment behind the suturiform articulation strongly longi- 

 tudinally striolated. Suturiform articulation thin, considerably bent backwards ; the 

 abdomen behind it finely and closely punctured, except at the apices of the segments. 

 Wings comparatively short and narrow. 



Z2. Leluthia fuscinervis. (Tab. XVI. fig. 3, $ .) 

 „ , basi antennarum pedibusque testaceis, coxis femoribusque ex parte nigris ; alis hyalinis, nervis fuscis,. 

 stigmate nigro. $ . 

 Long. 4 millim. ; terebra fere 2*5 millim. 



Eab. Guatemala, Pantaleon 1700 feet (Champion). 



