DOKCUS. 99 



Four spi'ciinciis of this insect wtMv sent to inc by M. 

 OI)eFthiir, who kindly allowed the type to be retained by the 

 British Museum. A i^ood series has sinee been received. 



This species is very closely related to I), rugosus Boil. l)ut 

 a little narrower in shaj)e. The eyes, as in that species, are 

 almost completely divided. The side margins of the ])ro- 

 thorax. which in both sexes of D. rugosus are rather strongly 

 concave behind, are here only very gently excised so that the 

 hind angles are less sharj) and the lateral angle is also com- 

 paratively blunt. The prosteruum is more ])rominent and 

 angulate Ix-hind. The male is distinctly more elongate than 

 that of I). nigosK.s, less convex and more ])arallel-sided. The 

 mandil)les attain a rather greater length and the tooth, which 

 is of the same form, is placed before, instead of aftei", the 

 middle. The i)ronotum is less coarseh' sculptured and 

 entirely dull, its side margins rather straight and the front 

 angles ver\- l)Iunt. The elytra are less rugose and distinctly 

 striate. 



:J7. Dorcus rugosus. (Plat(> XII, tig. 13.) 



I)arcii.s ruiio-siis Uoil.,* Bull. Soc. Ent. Fr. 1!»()4. \). .'{!). 

 Kiirijtnwliclii.f tntrinicorini (;ra\('l\",* Wvv. Ind. .ATiis. \i. I'.tl.", p. I2.">. 

 pi. 2i). (iti. .-). 



Black, very closely sculptured and clothed u])<)n tiie de- 

 j)i'essed parts of the upper surface with a brown earthy matter 

 and u])on the lower surftice with rather scanty decumbent 

 hairs or set;e, the tibia> and tarsi with a conspicuous clothing 

 of yellow bail's. Hather broad, compact and convex, with 

 short antenna' and legs. The eyes are very nearly, but not 

 (piite, divided into upper and lower halves by the canthus, 

 which is narrow and not prominent. The ])ron<)tum is 

 coansely j)unctured in the middle, with a feeble and indetinite 

 median depression, and closely rugose at the sides. The 

 fi'ont angles are acute, the lateral margins gently rounded to 

 the lateral angles, which are sharj), and strongly concave to the 

 hind angles, which are well marked but obtuse. The base is 

 almost straiglit. The scutellum is closely rugose. The elytra 

 are clo.sely and finely rugos(>, with numerous ill-defnu'd 

 elevated longitudinal lines, which disa])pear at the sides and 

 ajjices. The shoulders are acute. The metastenuun is very 

 coarsely and closely punctured in the middle and rugose at 

 the sides and the abdomen is very strongly and closely punc- 

 tured. The prosterjnnu is elevated, rounded, not ])ointed or 

 compressed behind. The third to seventh joints of the 

 antenna are very- compact and the three club-joints not very 

 short. The micltlle and hiiul tibiiie have each a lateral spine. 



9. The head is coarsely lugose and without post-oculitr 



