1919.] NATURAL SCIENCES OF PHILADELPHIA. 173 



was correct in recognizing the antennae as holding the most important 

 characters in this genus. Three species have been placed in the 

 genus of which I have seen but one, although all seem to agree in 

 the general form of the antennse and in having the eyes bare. Both 

 cinctus O. S, and histriatus Will., are more or less yellow vittate on 

 mesonotum. The former having the face and frons also yellow, 

 while ohscurus Coq. has the mesonotum entirely black and no yellow 

 on the entire body, although somewhat fuscous beneath the an- 

 tennae. Ohscurus also differs from the others in having two polished 

 gibbous calli above the antennse; the scutellar spines are short, 

 closely approximate with tips curving up. The two species described 

 below differ from all in having the eyes pilose. 



The antennae in this genus, typically, have the first and second 

 joints short, subequal, about as long as broad, or somewhat longer; 

 the third composing of six to eight closely united segments, of which 

 the first three or four are as stout or stouter than the second joint, 

 each about as broad as long, the last tapering to the slender apical 

 segments which seem to vary in length with the different species, 

 and are tipped with one or more minute hairs. 



Aochletus albopilosus new species. 



This and the following species are apparently allied to ohscurus 

 Coq., but there are no calli on the frons and the scutellum is broader 

 with well separated spines. 



cf . Black; margin of abdomen, knees, and bases of tarsi bro^Ti. 

 Halteres white. Eyes black pilose. Pile of ocellar tubercle black, 

 of face black and white, erect. Frontal triangle, facial orbits and 

 post, orbits with appressed white pile. Thorax and scutellum with 

 erect white pile, and appressed silvery white tomen, which on meso- 

 notum leaves three longitudinal bare stripes appearing black. Abdo- 

 men with sparse erect pile and tomen as on the mesonotum, leaving 

 the bases of segments bare and black; venter likewise clothed. Legs 

 sparsely white pilose. Head broader than high, and slightly higher 

 than long. Eyes contiguous for nearly full length of frons from the 

 prominent ocellar tubercle; line of demarcation of facets distinct 

 and opposite antennse. Face short, broad, convex, but not promi- 

 nent. Antennae situated slightly below middle of profile, as long 

 as head; third joint more than twice as long as first two together, of 

 about six segments. Thorax robust, slightly longer than broad. 

 Scutellum broader than long, broadly truncate, with two long well 

 separated spines. Abdomen round; lateral margins sharp and thin. 



