86 LARRIDEZ. 
The mandibles are deeply emarginate on the exterior. 
The abdomen ovoido-conical or conical. 
1. Three submarginal cells. 
Genus XIII. Larra. Fab. 
Heap large, compressed, a little wider than the thorax, with 
two deep sulcations in the face for the reception of the first 
joint of the antenne; the verter occupied by a quadrate 
space, enclosed in front and on the sides by an elevated ridge, 
terminated posteriorly by a transverse fossulet occupying the 
situation of the posterior stemmata, which are obsolete and 
approximate, the anterior stemma is seated in front of the en- 
closure, and very minute ; eyes oval, lateral, slightly converg- 
ing at the vertex; antenne filiform, inserted at the base of the 
clypeus, with the basal joint very incrassate; clypeus trans- 
verse, the anterior margin inflexed and then reflexed; the 
mandibles large, arcuate, with a dentation on the exterior 
towards the base. THorax oval; the collar transverse, 
almost concealed beneath the gibbosity of the dorsolum in the 
& ; the scutellum transverse; the metathorar very long, trun- 
cated posteriorly; the superior wings mith one marginal cell 
appendiculated, and three submarginal cells, the first as long as 
the two following—the second receiving both the recurrent nervures 
near its centre—the third lunulate—sometimes a fourth scarcely 
commenced; the legs moderately long, spinose; the femore 
obclavate ; the anterior éarsi strongly ciliated on their ex- 
terior, the joints of the rest having a fascicle of rigid hair 
at their extremities. ABDOMEN ovato-conical, acuminate at 
its apex in the 9, furcate in the g. 
Type, L. anathema. 
+4} This genus, of which the etymology is exceedingly 
doubtful, was first established, in 1793, by Fabricius, in his 
“ Entomologia Systematica,” and immediately adopted by 
