558 Mr. T. Vernon Wollaston on the 
but nevertheless a little, and gradually, widened both 
towai'ds its base and apex, and divided from the forehead 
by a very appreciable line ; in their eyes being exceedingly 
depressed, transverse, and slightly aj^proximated above ; 
in their prothorax and metasternura being a good deal 
lengthened ; in their scutellum being very conspicuous ; 
in their elytra (Avhich are just perceptibly broader than the 
prothorax) being deeply sulcated towards the apex — where 
they are separately, and minutely, rounded off; in their 
antenna? and legs (the former of which are inserted con- 
siderably behind the middle of the rostrum, and have the 
second funiculus-joint exceedingly abbreviated) being rather 
short and incrassated ; and in their feet being much thick- 
ened, with the third articulation conspicuously dilated and 
bilobed. Their fom' anterior coxre are about equally wide 
apart, and the hinder ones are but slightly more remote 
from each other. 
I am indebted to Mr. Fry, and also to Mr. .Tanson, for 
the opportunity of inspecting types of the C. longulus, 
Bohm., from Mexico ; and several other species are now 
in my possession (all of them South American) from the 
exceedingly rich collection of j\Ir. Fry. jNIy own belief 
is, that the genus, as properly defined, is essentially an 
American one ; for although it is true that three or four 
supposed representatives have been described from the 
islands of the Pacific, and elscAvhere, I think it is never- 
theless far from unlikely that these latter will be found, on 
a more critical examination, to pertain to some other 
gi'oup, — perhaps to Catolethromorphus, or even to the 
Pentarthrideous genus Stejiotrujns. 
69. Stenotribus {nov. gen.). — The type of this genus 
is a minute and narrow Brazilian Cossonid (communicated 
by Mr. Fiy as having been received from Bahia), which 
is Avithout doubt very closely allied to Catolethrus — for 
one of the smaller members of which it might Avell at first 
sight be mistaken. An accurate inspection, hoAvever, Avill 
shoAv that it cannot in reality be associated AA-ith the 
Catolethri, — fi'om Avhich it differs in its antenna? being 
inserted into the viiddle (instead of considerably behind 
the middle) of its rostrum ; in the latter being more 
parallel and CA'lindric (there being scarcely any tendency 
to either an anterior or a posterior thickening), and CA'en 
still more conspicuously divided from the remarkably 
convex forehead ; in its prothorax being extremely elon- 
