Lucanide. 350 
tibiz are armed throughout the whole length of the 
outer edge with about fourteen teeth, those next the base 
gradually diminishing in size, the larger ones being 
wider apart, with minute crenations between them. The 
middle tibize are armed with one spine in the middle of 
the outer edge, behind which is to be perceived the very 
minute rudiment of the second spine. The two hind 
tibize have only a single spine on the same situation. The 
under-surface of the body is moderately glossy and black, 
the prosternum is grooved down its centre between the 
anterior coxee, and the mesosternum is quite simple. 
In Major Parry’s collection is preserved a female 
specimen brought from Formosa by Mr. Swinhoe, which 
may possibly be the other sex of Rhetulus crenatus, but 
which it would be rash, without further information, to 
describe as such at present. Itis eleven lines long, black 
and polished, the head small and rugose, the sides of the 
head in front of the eyes very oblique, forming a large 
canthus extending over two-thirds of the length of those 
organs. The labrum is small, rugose, as well as the man- 
dibles, which are armed with a small tooth in the middle, 
and when shut close at rest, forming a triangle, advanced 
in front of the head scarcely more than half its length ; 
the prothorax and elytra are minutely punctured, the 
punctures at the sides and along the hind margin of the 
prothorax more strongly and thickly disposed. The 
sides of the prothorax are margined and crenated ; one 
tooth, opposite the humeral angle of the elytra, bemg 
shightly more prominent than the rest. The anterior 
tibiz are crenated with about ten stronger teeth on the 
outer margin; the middle tibiz are armed with a central 
spine in the middle of their outer edge, which is deli- 
cately crenated, and they have a very minute rudimental 
spine in front of the large middle one. ‘The two hind 
tibiz are armed only with a single central spine. 
Note on Ruxtus Westwoopit. 
The precise habitat of the origmal specimen of hetus 
Westwoodii was unknown, but Major Parry has recently 
obtained a second individual from the Himalayas. Hence 
he is induced to consider it probable, that the Himalayan 
