﻿of Lucanoid Coleoptera. 55 



anguHs 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. 15| ; 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. 5d), 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 disc 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 suffi- 

 ciently open to allow the extraordinarily developed outer flattened 

 lobe of the maxillae to lie exposed on the underside of the base of 

 the mandibles, figure 5 c representing the mentum with the exposed 

 lobes of the two maxillae, the maxillary palpi and the terminal 

 joint of the labial p;ilpi in situ ; whilst fig. 5d represents the 

 labium 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 antennae 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 disc 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 



