108 
to the head, and is yellowish-white in color, with the head, thoracic 
legs, and anal plate brownish. Beneath the last segment is a promi- 
nent false leg or pro-leg, which is not shown in the drawing. <A few 
scattering hairs occur on the body and a number of longer ones on the 
border of the anal plate. (See Fig. 5 Db.) 
Before transforming the larva contracts very considerably and the 
posterior portion becomes greatly enlarged. This contraction was 
already begun in the specimen figured. 
The pupa attords few, if any, characters except that of size to sepa- 
rate it from the pupa of longicornis. The illustration (Fig. 5 d) indicates 
the characters sufficiently well. The wing-pads are, however, too much 
abbreviated. 
The beetle is too well known to need further description. It is well 
represented in the accompanying illustration (Fig. 5e). The colors are 
black and yellow, or yellowish-green—the latter being the prevailing 
shade of the wings. 
We have reared two Dipterous parasites from this insect—one from 
the larva and pupa, and a Tachinid from the beetle. The larva of the 
latter escapes from the beetle through the suture between the pro-and 
meso-sternum. The puparium is covered with spines. 
A NEW HERBARIUM PEST. 
By C. V. RILEY. 
(Carphoxera nov. gen., ptelearia 0. sp.) 
In September, 1890, a number of small Geometrid larve, recalling 
somewhat in appearance those of the genus Aplodes, were found by the 
botanists of the Department of Agriculture infesting certain dried 
plants in the Department herbarium, and especially those which had 
been received from Mexico and Lower California from Dr. Edward 
Palmer. Dr. J. N. Rose first observed it in January, 1890, on plants 
from La Paz, but it was still more abundant in a collection from the 
State of Columa, Mexico, made in the beginning of the present year. 
The first moth emerged October 22, 1890, and others were subsequently 
reared from material received from time to time from the Department 
herbarium. While the larva was first discovered, as stated, on Mexi- 
can plants, it has not confined its work to such plants, but has spread 
to others, and is by far the most destructive herbarium pest which the 
botanists in charge have to deal with. Plants of the genus Coulterella, 
for example, which were sent by Dr. Rose to Dr. O. Hoffman in Berlin, 
have been reported as so injured that but one perfect flower remained; 
yet, according to the observations of Mr. L. H. Dewey, in overhauling 
the herbarium, the insect’s work is still mostly confined to southwestern 
plants; after those from Mexico, chiefly those from California. In some 
