592 Rev. F. W. Hore on some Nondescript Insects from Assam. 
Spec. 10. Lucanus PUNCTIGER. 
Long. lin. 93. Lat. lin. 4. 
Ater; corpore punctato nitido, thoracis marginibus externis serratis, elytris 
sutura parüm elevatà glabra insignitis, tibiis 4 posticis unidentatis. 
Totum corpus suprà et infra nigrum, nitidum, punctatum. Caput anticè 
rugoso-punctatum. Thorax marginibus externis serratis. Elytra striato- 
punctata, sutura parùm elevata glabra insignita. Pedes subrugosi, tibiis 
quatuor posterioribus unidentatis. 
The above insect appears to be the female of some hitherto unknown Luca- 
nus; there is an immature variety of it with dark mahogany-coloured wings 
in Mr. Griffith's collection. 
Having now described ten new species of Lucanus from Assam, I proceed 
to add some few observations respecting the group. 
M. Latreille divided Lucanus into two, and Mr. W. Sharp MacLeay into 
five sub-families. The latter author also formed two sections of Lucanus, 
according as the club of the antenna consisted of three or four articulations; 
a third section ought to be added, when the leaflets of the club consist of five 
joints, with the addition of a spurlike joint succeeding them. Now as Luca- 
nus Forsteri and five other species have the club consisting of five leaflets, 
there is ample ground for instituting a third section, which may therefore 
properly be denominated Pentaphylla. There can be little doubt that the 
above insect must eventually be formed into a distinct genus; but as at pre- 
sent I am merely describing species, I pass onwards to more material points. 
Thunberg, in his Monograph of Lucanus, published in the first volume of the 
Moscow Transactions, forms his three divisions from the characters of the 
mandibles; by which it appears, first, that they are furcate; secondly, simple, 
with the inner side dentated ; and thirdly, simple and unarmed. Such are 
the leading characters adopted by authors in their subdivisions of Lucanus. 
It appears to me, however, that other points well worthy of attention have 
been neglected (some, indeed, I may say, almost entirely omitted) ; namely, 
those which relate to the absence or presence of armature on the tibia. I 
therefore here recommend them to notice. 
