168 LUCANID^. 



front edge. The eyes are very prominent and scarcely at all 

 divided, the canthus strongly angulate in front, the sides of the 

 head convergent behind l)ut with a slight rounded prominence 

 behind each eye. The mandibles are falciform, much longer 

 than the head, very strongly curved, not dilated at the base 

 but moderatel,y broad to beyond the middle, then narrowed, 

 and sharply pointed at the tip. The inner edge has a slight 

 prominence a little before the tip, a sharp tooth near the middle 

 and six or eight slight denticulations between it and the base. 

 The pronotum l)ears fine, unevenly scattered punctures and is 

 very glossy in the middle, slightly oi)ac|ue at the sides and 

 strongly margined at the sides and base. It is very convex, 

 rather narrow in frcmt with the front angles subacute, the 

 lateral margins diverging and nearly straight from the front 

 angles to the middle, then bent upward and produced to a 

 sharp spine behind the middle, from which it is contracted and 

 concave to the hind angle, which is well marked bnt not acute. 

 The base is narrower than the elytra at the shoulders. The 

 elytra are very smooth and shining, without distinct punctures 

 but with a few incomplete longitudinal striae. The lower 

 surface is very smooth, the metasternnm. with a median groove 

 but almost devoid of distinct punctures. The front tibia has 

 the terminal fork not much produced and there are about 

 three fine lateral teeth with rather indistinct denticulations 

 between them ; the middle tibia has a minute lateral spine and 

 tiie hind tibia is unarmed. 



The female is unknown. 



Length (with mandibles), 2(i mm. : (without mandibles) 

 20 mm. : breadth, 9 mm. 



SiKKIM. 



Type in Dr. Didier's collection. 



The name castaneus, originally given to this si)ecies, having 

 been previously used, it has been necessary to chaiige it. 



81). Dorcus subnitens. (Plate Xll. fig. 8.) 



Cyclorusift subnitens Parry, Pi'oc. Ent. Soe. ]>oml. 18()2, p. 112; 



Trans. Ent. Soc. Lond. 1864, p. 42, pi. 7, fig. 1. 

 Prisniognathiis subnitens Gravely,* Rec. Inrl. Mns. 191.'), p. 421. 

 Prismognathus parvus Did., Col. Luc. du Globe, 1928, p. 79, fig. 38. 



Keddish-chocolate, a little lighter upcm the elytra, with the 

 lower surface, fem(jra and tibiiie (except the knees) red ; the 

 upper surface with a variable gi'eenish-metallic lustre, the 

 elytra (exce])t at the sides) and sometimes also the median part 

 of the ])r<)n()tum extremely smooth and sliining. Moderately 

 elongate and convex, witli the (>yes prominent, not veiy small 

 and scarcely divided by the canthus. The pronotum short and 

 broad, witli tlic base rather iKirrow and the liind angles sharp. 



