DORCUS. 89 



wide (dypcal i)i(Kess. iii such specimens the head is rather 

 closely punctured, opaque only in front and shinin<i behind. 

 The i)ronotum is rather rectangular, smooth and shining, with 

 minute punctures, except at the sides and close to the hhid 

 margin, where it is rather coarsely rugose. The lateral margins 

 are almost straight and parallel, the front angles very blunt, 

 the lateral angles feebly indicated and the hind angles obsolete. 

 The elytra have a smooth sutural margui and numerous narrow 

 shining costae, separated by rug(jse intervals, the cost* becoming 

 gradually feebler towards tht; sides, which are broadly rugose. 

 The mandibles are very short, very strongly curved, with a 

 strong triangular tooth close to the base and pointing a little 

 backward. Less dwarfed examples have the mandibles longer, 

 the head more opaque, the sides of the pronotum less parallel 

 and more distinctly angulate behind, the el>"tra irregularly 

 striate, with the intervals flat and, in the posterior part, broad 

 and closely punctured. At a further stage the head and 

 l)ronotum are minutely granular and opaque, without punctures, 

 the latter is broader in front and a slight excision of the 

 lateral margin appears near the front. The elytral striae, 

 though strong near the rugose sides, become feeble in the 

 imier part, where the close punctures also are finer. Punctures 

 and striae finally disappear, except close to the base, the elytra 

 becoming relatively shorter and broader. At this stage the 

 lateral excision of the pronotum is deep and there is a strong 

 angulation of the margin behind it, the mandibles have 

 increased in length, they are less evenly rounded externally 

 and the tooth is farther from the base. In large specimens 

 the mandibles are almost straight in the middle part, slightly 

 barbed near the tip, and the strong tooth is situated past the 

 middle and tlirected obliquely forward. The elytra are smooth 

 and shining, with the base and sides rugose. 



^. Xc/tgrM (with mandibles), 38-73 mni. ; (without mandibles) 

 33-54 mm. : breadth, 15-28 mm. 



$. Length, 32^0 mm. ; breadth, 13-19 mm. 

 Bhutan {Capt. Pemberton). Darjeeling Distr. : Kur- 

 seong, 6000ft {E. A. D'Abreu, June, July); Gopaldluira, 

 Rungbong Valley (If. A'. Webb); Pedong (L. Durel). 

 Sumatra. Java. 



Type in the Hope Dept., Oxford University Museum. 

 D. curvidens is very closely related to D. hopei Saund., ol 

 China and Japan, the average size of which is a little smaller. 

 The males, altliough that of hopei is rather shining, can only 

 be distuiguislu'd with a little clifficulty, but the female of I), 

 hopei is easily recognizable, being without the deeply grooved 

 elytra of ]). curvidens. 



It seems to me pr(ibal)le that Hope described (he same 

 specijuen iirst as ciirvidois and four years later as di/uiuui. 



