178 
AVILLIAM G. DIETZ, M. D. 
corrhyndiid series. One of these, Alycodes, whose affinity to the 
Erirrliini is well shown by the formation of tlie ventral segments, 
the covered pygidiiim and the sim])le claws, and by its toothed 
femora, would have to he placed after Dorytomus, hut the obliquelv 
truncated anterior thoracic opening, the prosternum short in front 
of tlie coxffi, the antennal formation, etc., have induced me to jilace 
it in the })resent tribe. Another aberrant genus, Euclyptus, resem- 
l)les Xoto/ovius basu/is Lee. in its general appearance, and also in the 
ventral formation ; the prosternum, however, is short in front of the 
coxffi, the j)ygidium freely exposed, and the appendiculate claws 
warrant its position here. Elleschus, placed by Lacordaire among 
the Tychiides, I have retained in the present tribe; the second, third 
and fourth ventral sutures are slightly bent backward at the sides; 
this character is also noticed in a few Anthonomi (A. elegam, jinii- 
perinu-s). Simple claws occur in a small number of species, dis- 
tributed among several genera. This abnormality in the present 
tribe is the final result of a gradual reduction in development, passing 
from the bifid claws of some Anthonomi (Anthonomorphus) to the 
very small, though distinct tooth of Chelonychus and a few others, 
to disappears altogether in Epimechus, Ephelops, etc. A remarkable 
character exists in the subcontiguous middle coxje of Magdalinops. 
As will be seen further on, considerable inq)ortance has been attached 
to the relative length of the ventral segments. 
The .sexes can generally be separated without much difficulty by 
keeping in view the following points : 
Ma/e . — Beak stouter, more coarsely sculptured and generally more 
o})aque ; anteniiie inserted nearer the aj)ex, or more coi-rectly sj)eak- 
ing, the beak as already pointed out by Jekel (Annales de la Soc. 
Entom. de France, 1864) is less prolonged beyond the insertion of 
the antennie, the distance of the latter from the base is about equal 
in both sexes. 
Female . — Beak more slender, less coarsely punctured and more 
shining ; anteniue more remotely inserted from the apex. 
The third and fourth ventral segments appear to be a trifle shorter 
in the males ; the fifth is generally longer and rounded in the female ; 
shorter, subtruncate, or eniargiuate in the male, permitting the py- 
gidium to become more or less visible from below. The latter is 
more freely exj)osed in the male, rarely entirely covered by the apex 
of the elytra, while frequently only partially exj)osed or entirely 
concealed in the female. 
