1915.| F. H. Gravety: Lucanidae of the Indian Museum. 429 
The tips of these supporting laminae are weak and unite with 
the chitinous support of the ventral margin and lateral walls 
of the funnel-shaped aperture of the ductus ejaculatorius. The 
left lamina, in addition, gives off a broad tongue-like branch 
just below the tip. This tongue extends slightly beyond the end 
of the body of the sac. The tongue is unarmed, but a band of fine 
backwardly directed teeth extends along the ventral distal margin 
of the body of the sac, and thence obliquely backwards on both 
sides to the dorsal surface, where the left hand portion of the band 
ends about opposite the unpaired tongue-like process, the right 
hand portion being about five times as long. 
There is no flagellum. 
The internal sac is permanently everted. When the geni- 
tal tube is retracted this sac does not lie against the median lobe, 
but in a delicate sheath attached to the outer surface of the inter- 
nal abdominal segments. 
?. Differs from maies only in having somewhat smaller man- 
dibles in proportion to its size, and in the structure of the genitalia. 
This species appears to come very near N. obesus, Parry, but 
it is larger and the anterior angles of its pronotum are neither 
simple nor of the shape shown in Westwood’s figure (Tvans. Ent. 
Soc. London, 1874, pl. iii, fig. 5). 
The anterior margin of the frons, too, is concave on either 
side of the median convexity, not evenly convex as shown in that 
figure. There are also slight differences in the shape of the 
canthus. 
Nigidius himalayae, n. sp. 
(Pl xxix, fig. 6.) 
E. Himalayas : Darjeeling District—Pashok («). 
A male of this species was obtained by H.E. Lord Carmichael’s 
collectors in the Darjeeling District. It is 20:0 mm. long, and was 
the only specimen I had seen when the following description was 
drawn up. More recently Mr. Lister has sent me specimens from 
Pashok which vary from 13°7 to 17°7 mm. in length. 
In general appearance this species resembles the last, but it is 
distinctly slenderer. The lowest terminal tooth of the right man- 
dible is absent. The clypeus is longer than and scarcely as wide 
as in the last species, and is bilobed. The middle part of the 
frons is less prominent than in that species. The canthus is less 
deeply cleft, and the posterior part is less prominent. There is a 
strongly marked depression in the middle line towards the back 
of the head, as well as a pair of depressions behind the anterior 
angles. 
The pronotum is less than twice as broad as long. It is bord- 
ered in front by a very broad groove. This groove is marked with 
large shallow punctures, and is crossed in the middle line by a fine 
keel, which is terminated behind by a transverse keel of similar 
dimensions to itself. The broadly reflexed anterior parts of the 
