COLEOPTERA. 
591 
at base and tip ; the elytra are rounded at the tip and en¬ 
tirely cover the abdomen. These beetles infest the stami- 
nate flowers of coniferous trees, in which the eggs are laid. 
The family RHYNCHiTlDAi (Rhyn-chit'i-dae) includes 
Snout-beetles in which the elytral fold is very feeble, the la- 
brum is wanting, and in which the mandibles are toothed 
both on the outer and inner side. The mandibles can be 
spread widely, and when closed the outer tooth at the end 
of each projects forward so that two small acute teeth seem 
to project from the mouth. 
The most common member of this family is Rhynchites 
bicolor (Rhyn-chi'tes bi'co-lor) (Fig. 721). This is red above, 
except the snout, and black below ; the body, not in- 
eluding the snout, is about one fourth inch long, 
the snout is half that length, 
abundant on wild roses. 
The adults are often 
Fig. 
721. 
The family ATTELABID,E (At-te-lab'i-dae), or Leaf-rolling 
Weevils is composed of beetles that have neither an elytral 
fold nor a labrum, and in which the mandibles are flat, 
pincer-shaped, and toothed on the inner side. The elytra do 
not entirely cover the abdomen, and each is separately 
rounded at the tip. Only five species are known from this 
country, four from the Atlantic States, and one from New 
Mexico; all belong to the genus Attelabus (At-tel'a-bus). 
The females provide for their young in a very remarkable 
way. They make compact thimble-shaped rolls from the 
leaves of trees (Fig. 722) and lay a single egg in each. 
K|jj The larvae feed on the inner parts of these rolls, and 
when full grown enter the ground to transform. 
Xg/ Sometimes these rolls are found hanging by a narrow 
Fig. 7«. piece to the leaf from which they were made, and 
sometimes they are found lying on the ground separated 
from the leaf. 
The family Byrsopid^E (Byr-sop'i-dae) is represented in 
North America by a single species, Tltecesternus hnmcralis 
