590 Mr. T. Vernon Wollaston on tne 
Gray, Esq., and Avliicli almost comjDletely satisfies tlie 
published diagnosis of that insect, to be likewise a Hex- 
arthrum, 
117. ToMOLiPS {nov. gen.). — "With the exception of 
Pentaniimus from Australia, the present genus offers the 
only exception (as far as I have hitherto observed), outside 
the subfamily Pentarthrides, in Avhich the funiculus is 
composed of but five joints ; nevertheless it is so manifestly 
related to Ilexartlirum (in which that organ is 6-articulate), 
and likewise to the sub-Hylastideous groups around Bra- 
chytem7ius, that it is as impossible to consider it a Pen- 
tarthrid as it would be to place Ilexarthriim (on account 
of the number of its funiculus joints) amongst the anoma- 
lous types of the Onycholipidcs. And hence, so long as 
a natural arrangement (and not a purely artificial one) is 
to be aimed at, I have practically no choice left me but to 
treat it as an exception in the subfamily Cossonides. It 
is a significant fact however that its nearest known ally 
shoidd be a genus in wdiich the funiculus-articulations are 
likewise reduced in number, — in that instance however 
(from the normal seven) to six ; and it would look therefore 
as if these immediate forms were subject par excellence (in 
that particular respect) to instability. Be this however as 
it may, I will merely repeat that the two genera in question 
(namely Hexarthrum and Tomolips) are, with the excep- 
tion o{ Pentamimus and Tatracoptus, the only instances, 
so far as I am aAvare, in the present subfamily, in which 
the funiculus is otlierrcise than l-jointed, — it being com- 
posed of six articulations in the one, and of five in the 
other. ' 
But, apart from this primary peculiarity in the structure 
of its funiculus, Tomolips is somewhat osculant between 
Hexartlirum and the strictly sub-Hylastideous genera — in 
which the rostrum is extremely short and broad, the eyes 
are less widely separated, and the scul^iture is remarkably 
coarse ; whilst in the ohtriangular shape of its solid and 
compressed club it shews an equal aflSnity Avith the 
European Stereocorynes. However its posteriorly-aspe- 
rated elytra is a character of considerable importance, and 
one Avhich is likewise indicated (though to a less extent) in 
Hexarthrum. In its glabrous antennas (the scape of 
Avliich is much abbreviated, and the funiculus very com- 
pact), as Avell as in its four anterior coxa3 being nearly 
contiguous, it is in perfect accordance Avith these imme- 
