528 Mr. T. Vernon Wollaston on the 
is ])crhaps more correctly placed at no great distance from 
the equally anomalous group OnyclioUps than in any other 
situation with which I am at present acquainted. And if 
it can be shown that the subfamily OnycJiolipides is its 
true status, there can be but little doubt (despite the 
anomalousness of its structure) that it is a veritable mem- 
ber (although, like its immediate associates, an aberrant 
one) of the Cossonidce ; — for OnyclioUps is so intimately 
connected, on the one hand (through Halorhynchus and 
Pentatemnus), with the Pentartlirides, and on the other 
(by means of Raymondionymus, Alaocyha, and Lipom- 
mata) with the Cossonides proper, that there is scarcely 
room for question as to where, in any system of arrange- 
ment which professes to be a natural one, it should be 
stationed. 
Although very differently modified, there is a remark- 
able degree of correspondence between Georrhynchus and 
Onycholips, — not merely in the exact parts selected for 
modification, but likewise, to a certain extent, even in the 
kind of their development ; Avhilst in their subfossorial, 
sand-infesting modes of life they appear to possess another, 
and a very significant, point of union. Thus, in both 
cases, the number of the funiculus-joints is reduced to the 
very unusual one of six, and that of the tarsal ones to four ; 
and both genera are almost equally conspicuous for their 
comparati\ ely pale, hairy, convex, and slightly asperated 
bodies ; for their greatly abbreviated antennae, rostra, and 
metasterna ; and for their tibia; (although different in 
detail) being on a comj^ressed and burrowing type, and 
moreover (Avhich is of the utmost importance) free from 
an apical hook. In each instance, too, the scutellum is 
distinct, and (which is especially to be noted) the fi'ont 
00X03 are contiguous and the intermediate ones but barely 
separated. It is true that the eyes and claws, which are 
absent in Onycholips, are present in Georrhynchus ; but 
that may indicate a mere generic difference, such as we 
see paralleled in other groups of the Cossonidce wdilch are 
universally admitted to be in juxta-position ; and I think 
therefore that enough has been said to render it at least 
probable that the two genera in question are not very 
remote, as regards the several peculiarities of their struc- 
ture, from each other. And if this fact can be but once 
established, it seems to me that we have then sufficient 
evidence to show (as may be gleaned from my observations 
