350 INSECTS. HYMENOPTERA. 



elongated, triangular ; jaws and lip long, forming a kind of 

 proboscis bent downwards ; palpi very short, the maxillary 

 ones of four joints and the labial of two. 



B. rostrata, Lat. Black, with transverse citron-coloured bands 

 above the abdomen ; shoulders black, bordered with yellow ; tarsi 

 without spots in both sexes. 8 lines long. Inhabits Europe. 

 Lat. Gen. iv. 98. 



TRIBE VI. LARRATJ:, Lat. 



Labrum entirely concealed, or slightly perceptible; abdomen 

 ovoido-conical or conical ; mandibles with a deep notch on 

 their inferior side. 



I. With three cubital cells. 



Gen. PALARUS, LARRA, LYROPS. 



II. With two cubital cells. 



Gen. MISCOPHUS, DINETUS. 



Gen. LARRA, Fab. Lat. Sphex, Vill. 



Upper wings with a small radial and three cubital cells, of which 

 the first is largest, the second receives two recurrent nerves, 

 and the third is semilunar ; antennae of the same form in both 

 sexes, the second joint almost in the form of a reversed cone ; 

 internal side of the mandibles without projection or teeth ; 

 labium without distinct lateral divisions. 



L. Ichneumonrformis, Fab. Lat. Body obscure black, without spots; 

 abdomen shining black, with the first two segments reddish brown. 

 8 lines long. Inhabits South of France Lat. Gen. iv. 71. 



TRIBE VII. NYSSONII, Lat. 



Mandibles not notched inferiorly ; labrum concealed or slightly 

 perceptible ; abdomen ovoid or conical. 



I. Eyes entire. 



1. Three cubital cells. 



Gen. ASTATA, NYSSON. 



2. One cubital cell. 



Gen. OXYBELUS, NITELA. 

 II. Eyes notched. 



Gen. PISON, (three cubital cells.) 



Gen. NYSSON, Lat. Sphex, Villers. 



Anterior segment of the trunk very short, transverse, linear ; 

 feet short ; Jabrum small, concealed or slightly projecting ; 

 abdomen ovoid conical ; antennae inserted near the mouth, 

 thickest toward their extremity, the last joint hooked in the 

 males ; mandibles without dentations ; three cubital cells in 

 the upper wings ; two strong points at the posterior extremity 

 of the thorax. 



