DORCUS. 129 



than the base of the pronotiiin. The front fihia is very 

 finely serrate externally, with a few small, sharj), widely 

 separate teeth, tlie middle tibia bears a stronj^ lateral spin(^ 

 and the hind tibia has a very minute spine or ncme. 



Length (with mandibles), 2()-29 mm. ; (without mandibles) 

 22-24-5 mm. : breadth, 8-9 mm. 



Assam. 



$. Unknown. 



Type in Dr. Didier's collection. 



59. Dorcus feai. (Plate X, figs. 9, 10.) 



Prosopocoflus feai Boil.,* Le Naturaliate, xxiv, 1902, p. 204. 



Reddish-chocolate, with the margins of head, pronotum and 

 elytra and sometimes the entire head or the head and thorax 

 black, or (5) the whole insect black, the lower surface of th(^ 

 tarsi and the inner face of the tibiae bearing fringes of ratlier 

 long golden-yellow hairs. The prosternum prominent behind 

 but rather broad and bluntly rounded. The seventh joint 

 of the antenna acutely produced and the three joints of the 

 club short. 



$. p]ntirely black and shining, fairly narrow but less slender 

 than the male. The head is closely rugose in front and strongly 

 and closely punctured beliind. The pronotum is almost 

 imperceptibly punctured in the middle but the punctures 

 become gradually stronger and more numerous towards the 

 sides and form wide, strongly and very closely })unctured, 

 borders. The ,<icutelluni is well punctured. The elytra are 

 everywhere distinctly and rather closely j)unctured, with a 

 deep juxta-sutural stria, disappearing towards the a])ex, and 

 traces of paired lateral striae. The el3^i;ral punctures become 

 gradually stronger and closer from suture to sides but without 

 forming opaque borders. The front tibia has a fairly long but 

 not slender terminal fork and the middle and hind tihivo liave 

 each a strong lateral spine. 



rj. Rather narrowly elongate, but with the i)rotliorax short 

 and broad. The upper surface is dull, but in small sjx'cimcns 

 l)arts of the head, the middle of the ])ronotuin and the sutural 

 region of the elytra are shining. The head is Hat and tiju-ly 

 coriaceous. The ocular canthus extends to the middle of 

 the eye, but is very obtusely angular in front and not prominent 

 laterally. The sides of the head are feebly swollen behind 

 the eyes. The clypeal process is small, rather narrow and 

 obtusely pointed. The mandibles are long, slender and gently 

 curved. The front angles of the pronotum are produced but 

 very blunt, the sides are gently rounded to the sharply s])ined 

 lateral angles, which are placed only a little in front of the base, 

 and feebly sinuated to the latter, the hind ajigle very ol)tuse. 



