Sept. 1897.] Packard: Transformations of Hymenoptera. 113 
is exserted, the rhabdites, as usual, forming a square tip. The thorax 
above is much as in Megachile , but the abdomen is more contracted at 
base, and a little more acutely produced at tip, but otherwise much as 
in Megachile ; the edges of the abdominal segments are posteriorly 
much thickened and minutely dentate. Length, .30 inch. 
It differs from Megachile in its longer, narrower head, narrower full 
clypeus, the shorter, squarer labrum, the long lingua and maxillae, the 
latter being nearly twice as long as in Megachile , also in the presence 
of the four acute spines along the under side of the abdomen, as well 
as in the longer, slenderer legs and the narrower base of the abdomen. 
Xylocopa virginica (. Drury ). 
Larva .—Received July 8 from M. James Angus, of West Farms, 
N. Y. 
Length, 1 inch; thickness, .28 inch. Larva nearly full grown. 
The head is very small, and the jaws move rapidly, being thrust out 
back and forth from beneath the labrum, which is very movable. 
Body cylindrical and tapering to a point, so as to be very much alike at 
both ends. The usual lateral swollen area is very faintly marked, ren¬ 
dering the body still more cylindrical than usual. The segments of the 
body are quite convex, the sutures being rather deeply impressed, but 
they are not tuberculated above, though somewhat thickened on the 
hinder edge. 
The larva is much like that of Bomhus , but slenderer and tapering 
more towards each end. 
Fig. 11. Xylocopa virginica. Larva natural size. (Emerton, del.) 
Anthrax sinuosa Wiedermann. 
Larva —We received July 8, 186I, from Mr. James Angus, the 
larva of this species (see Guide to Study of Insects, 397), but have not 
published the following description: Body smooth, flattened, slowly 
tapering towards each end, so that it is difficult to tell which is the head 
or tail end. The head is oblong, with the jaws on the under side, re- 
