OF WASHINGTON. 
nietathorax, coxse, femora, or abdomen; but none have yet been described 
with spines on the wings, as is the case with our little Chalcid. 
This Chalcid belongs to the sub-family Eulophince, but the cephalic, scu- 
tellar and wing characters are too anomalous for it to be placed in any of 
the known genera, and it will therefore require the erection of a new genus 
for its reception. 
The head is very broad, much broader than the thorax, the occiput deeply 
concave, and the vertex very thin antero-posteriorly, while the lower por- 
tion, about the region of the mouth, is abnormally thickened or swollen, 
the mandibles being remarkably small- almost obsolete and when viewed 
from the side a deep incision is seen between them and the clypeus, giving 
it a very peculiar appearance. 
The antennae are normal, agreeing with many other forms in this group, 
and the thorax does not differ greatly from many forms both in the sub- 
family Etdophince and Elachistinoe , except that the shoulders are much 
more prominent than usual. 
The scutellum differs decidedly in that the grooves diverge posteriorly, 
and then curve and meet, forming a perfect frenum. 
The abdomen is remarkable only for its long petiole, this being longer 
than in any other form yet discovered. 
But what renders this Chalcid the most anomalous of hymenopters is 
the wings, the superior pair having a distinct conical spine covered with 
dense bristles (or it may be a dense tuft of bristles) on the superior mar. 
gin, at about where the submarginal nervure runs into the marginal, the 
character and use of which cannot be imagined, nor can one imagine the 
cause that induced the development of so remarkable an appendage. 
If such an anomalous appendage had been developed in a male, we 
should have at once attributed it to sexual development, either as an adorn- 
ment to please the fancy of the females, or as an armament development 
in the battles of the males for their favors. 
It is to be hoped that the male will soon be discovered, so we can see 
just what remarkable structural peculiarities he will present, and in what 
respect he differs from the female. 
For the reception of this chalcid, I have erected a new genus under the 
name Hoplocrcpis, and the species may be known as Hoplocrepis albi- 
clavus, the descriptions of which are as follows : 
Hoplocreph, n. g. 
Head very wide, much wider than the widest part of the thorax; the 
occiput deeply concave, leaving the vertex very thin antero-posteriorly. the 
3 ocelli arranged in a row on the sharp edge thus formed ; the face subconvex 
and the lower portion abnormally thickened through from throat to frons ; 
the mandibles are extremely small, nearly obsolete, and between them and 
the swollen face, when viewed from the side, is seen a peculiar deep in- 
cision. 
Ryes large, oval, occupying more than two-thirds of the side of the head, 
leaving quite a wide space between them and the base of the mandibles. 
