of Lucanoid Coleoptera. 55 
angulis acutis; mandibulis capite dimidio longioribus, dente 
parvo interno basali, altero magno paulo pone medium 
oblique porrecto, armatis; capitis disco versus angulos 
anticos obtuse bituberculato, maxillarum lobo valde elon- 
gato, 
Long. corp. lin, 154; mandib. lin. 6; prothoracis latitudo, lin. 7. 
Habitat in India orient. septentr., Darjeeling. Mus. Parry. 
The general colour is black, the elytra alone having a slightly 
pitchy tinge. The head and pronotum are very delicately granu- 
lose, and consequently subopaque ; the elytra glossy, with rather 
deep striae formed of confluent punctures. The head and pro- 
notum especially are much flattened. The fore margin of the 
former is rather deeply emarginate in the middle, the emargi- 
nation terminating in a produced point at each end, beyond which 
the front of the head is nearly straight, the lateral angles rounded 
off, the canthus cutting the eye into two parts (fig. 5a), and the 
sides of the head behind the eyes slightly produced into a rounded 
tubercle; between the eye and the frontal spine is, on each. side, 
a small rounded but very slightly raised tubercle on the dise of 
the head. The clypeus is quite simple in the middle; the man- 
dibles are half an inch in length, they are armed near the base on 
the inner edge with a small conical tooth, and rather beyond the 
middle with a strong tooth porrected obliquely forwards. The 
mentum is very broad and short, deeply emarginate in the middle, 
where it is depressed so as to meet the depressed centre of the 
clypeus and close the mouth in front ; the sides, however, are sufli- 
ciently open to allow the extraordinarily developed outer flattened 
lobe of the maxillz to lie exposed on the underside of the base of 
the mandibles, figure 5c representing the mentum with the exposed 
lobes of the two maxille, the maxillary palpi and the terminal 
joint of the labial palpi in situ; whilst fig. 5d represents the 
Jabium and labial palpi detached from the inner side of the 
mentum, the palpi even here being of unusual elongation. This 
structure I have observed in no other Lucanideous insect to such 
an extent as here occurs. The antenne have the 7th joint pro- 
duced into a point on the inner edge and armed with a bristle; 
the three terminal joints are short and broad. The dise of the 
head behind the eyes and along the posterior margin is finely 
punctured ; the prothorax is wider than the head, the lateral mar- 
gins nearly parallel, armed near the anterior angles with a small 
prominent angular projection; the sides, as well as the anterior 
and posterior margins, are strongly punctured ; in the middle is a 
slightly impressed and punctured space, and within each of the 
