34 Mr. G. R. Waterhouse on Coleopterous Insects 
“lated; the’ claw-joint of each tarsus is nearly equal in length 
to the four basal joints taken together. 
“Tn general appearance, in the structure of the head and of the 
tarsi, the species of this genus approach very nearly to the mem- 
‘Bers of Déjean’s genus Blapstinus; they have the legs however 
rather longer, the thorax less distinctly transverse, and the elytra 
‘more convex; these are moreover soldered together, and there 
are no wings as in Blapstinus. Judging from the definitions of 
the various genera of Pedinide, the present genus presents a 
combination of characters not hitherto noticed... Those genera of 
the family of which I possess examples in my own collection I 
find are capable of being distinguished from each other by the 
following characters, which it will be observed are not peculiar to 
either sex, and are therefore preferable, as it appears to me, to 
those which have hitherto been pointed out, and which are chiefly 
derived from the vafiations in the structure of the tarsi of the 
male. 
1. Apterous; elytra soldered together at the suture. 
A. Eye divided by the lateral ridge of the head. 
a. Anterior tibize distinctly dilated at the apex. 
a*. Antenne short, submoniliform............... Heliophilus. 
a**, Antenne with the joints, most of them, 
obconic. 
a*1. Middle tibie dilated at the apex . Pedinus. 
a* 2. Middle tibiz not dilated at the apex Jsocerus. 
b. Anterior tibize not dilated at the apex ......... ee. Pedonewces, 
®. Eye uncovered (not divided by the lateral ridge of the 
head). 
a. Clypeus truncated-or slightly rounded in front .... Platyscelis. 
a*, Clypeus emarginated in front. 
«* 4, Antennze distinctly incrassated at 
the apex..... Soacasast Feces nieces Secs Eurynotus*. 
a*2. Antenne with the terminal joints 
oblong, not broader than the rest. Dendarus. 
IT. Winged; elytra free. 
A. Eye divided by the lateral ridge of the head......... ... Blapstinus. 
b. Eye uncovered at the sides .........0 wilds Caabe nian cia Opatrinus. 
+ The mentum in Lurynotus is distinctly trilobed, having a central prin- 
cipal portion and two lateral wings; these wings or lateral lobes diverge as 
they part from the base of the mentum and are acutely pointed at the ex- 
tremity ; they are separated from the mesial lobe by a deep hollow on each 
“side. ' In the great Indian species, which Dejean arranges under the head 
‘ Platynotus, the same structure of mentum is observable as well as in Opa- 
trinus; but the lateral lobes do not exist in Heliophilus, or at least they are 
here exceedingly minute and curved inwards, as I have observed to be the 
case in the mentum of Blaps; Dendarus appears to agree with Heliophilus 
in this respect. Platynotus of Dejean must undoubtedly be placed near to 
