NORTH AMERICAN COLEOPTERA. 
179 
The tibial armature, and especially the mucro of the posterior 
tibiie, is more slender and longer in the male than in the female. 
As is well known, all the members of the present tribe are phyto- 
phagous, and the greater number, no doubt, spermo])hagous. A few, 
like A. sycophanta, P. cratcegi, Coccotorus, etc., are said to breed in 
galls. I regret that I have nothing new to offer in the life-history 
of these insects. 
Family CURCULIONID.E. 
Tribe Anthonomini. 
Mandibles bi-emarglnate and three-toothed at tip; gular peduncle 
long ; oral organs small. 
Beak cylindrical, long and slender; more rarely moderately stout 
and shorter (Macrorhoptus, some Anthonomi). More or less curved 
in all, but nearly straight in Macrorhoptus and Cionistes. Scrobes 
commencing at a distance from the buccal opening (less remote in 
the subgenus Paranthonomus) ; straight or somewhat curved ; directed 
against the middle or lower segment of the eyes; more rarely (Mac- 
rorhoptus, Cionistes, Pseudanthonomus and Ephelops) oblique and 
directed beneath the eyes. 
Antenme variable, long and slender in the great majority ; in- 
serted at a distance from the apex ( less remote in Paranthonomus) ; 
subbasal in certain Orchestes (Alyctus Thoms.). Scape long and 
slender, rarely (Macrorhoptus, certain Orchestesj short and stout ; in- 
crassate at its distal extremity and generally impinging against the eye, 
except in Tachypterus and those genera having the scrobes oblique 
and directed beneath the eyes. Funicle live to seven jointed, glab- 
rous ; first joint stout, generally elongate; following joints variable, 
each with a verticel of six to ten stiff or flexible hairs; rarely 
I Acalyptus and Euclyptus) entirely pubescent. Clava elongate oval 
or elliptic, acuminate, pubescent; closely or more loosely articulate 
(first joint strongly glabrous in Magdalinops, some Anthonomi and 
Neomastix), rarely very elongate and very loosely articulate (Ta- 
chypterus and in the subgenus Leptarthrus), or broadly oval and 
closely articulate (Neomastix). 
Eyes at least moderately large, roumled and remote from the pro- 
thorax ; rarely (subgenus Anthonomorphus) small and subrostral in 
their position ; widely separated above, and nearly flat or moderately 
convex in most; rarely (A. elegans, leucosticfus ; Leptarthrus, Or- 
