Patton. | 394 [January 21, 
the tip of first and second joints internally but none at the tip of the - 
third joint internally. 
Waterbury, Conn., July 21st and August 5th, on the flowers of 
Asclepias incarnata. The specimens slightly worn. In unrubbed 
specimens it is probable that the armature of the tarsi and of the 
clypeus would be the same as in the following species. The females 
of the three species here described are closely related, the principal 
differences being found in the color of mandibles, scape, tibiae and 
dorsal area, in the number of silvery bands and in the eo on 
scutellum and groove on metathorax. 
This appears to be the species which has been Bs by Massa- 
chusetts Entomologists for the aurulenta of Fabricius, byt Fabricius 
described the wings of his species as “obscura.’? From aurulenta 
Smith this species differs in having no “ notch in the middle of the 
anterior margin of the clypeus.” The aurulenta of Lepeletier appears 
to be different from that of Fabricius, but differs also from distinctus 
Smith. 
TACHYTES MANDIBULARIS N. sp. 
?. Length 13mm. Black, the head, scape beneath, thorax and 
femora clothed with golden pubescence, the pubescence more dense 
and brilliant in the usual positions, the pubescence long on the tho- 
rax beneath; basal segment of the abdomen with a thin silvery 
pubescence, apical margins of the four basal segments of the abdo- 
men silvery; second ventral and the margins of the other ventral 
segments clothed with an appressed brown pubescence which in cer- 
tain lights appears silvery; dorsal area black, coarsely punctured, 
the appressed bristles piceous; abdomen with the usual rows of 
erect bristles. Base and middle of the mandibles, the palpi and 
labrum, the scape beneath, the knees, tibiae and tarsi, the tegulae 
and nervures, ferruginous. The wings yellowish subhyaline, the 
apical margin clearer. Body very finely punctured. Clypeus 
broadly and abruptly produced, margined, all but the margin pubes- 
cent; the middle of the margin produced into a quadrate tooth, the 
tooth bituberculate or medially impressed, the margin on each side 
having three teeth, the outer tooth most distinct and somewhat 
oblique. Labrum with a slight median impression in the narrow 
anterior border, fringed with stout spinules. Posterior ocelli drawn 
out as usual upon the sides of the tubercle, the tubercle divided by a 
median impression which extends upon the vertex, and encircled by 
