THE AFGHAN DELIMITATION COMMISSION. 127 



PlMELIIlSLE. 



29. Diesia costifera, sp. n. (Plate XIV. fig. 13.) 



Nigra ; thorace opaco ; elytris rotundatis, nitidis, convexis, ad suturam planatis, 

 singulis costis tribus crenulatis vel serratis ornatis, marginibus lateralibus serratis ; 

 tarsorum articulo ultimo dilatato longe hirsuto. Long. 11-12 lin., lat. 6-7 lin. 



General form somewhat tbat of Pimelia angulata. Antennae ratber long and slender, 

 brown, sparingly birsute, tbe apical joint a little longer tban tbe tenth, narrowed at the 

 base, broadest at about one quarter from the base, acuminate and sponge-like at the 

 apex. Lab rum brown. Thorax twice as broad as long, convex, dull, with a long 

 shallow impression near the base ; anterior angles slightly prominent and diverging. 

 Elytra considerably broader than the thorax ; shining, but more opaque at the apex, 

 which is triangularly produced. The first costa is not much raised, crenulate ; the 

 second is more elevated, and is furnished with short acute spines : neither of these costse 

 reach the apex. The third costa is sublateral, very strong, and the spines are a little 

 longer than those on the second. The interval between the suture and the first costa is 

 nearly fiat ; the next interval is gently concave ; the interval between the third and fourth 

 costa? is rather broader and more concave. The anterior tibiae gradually enlarged to the 

 apex, moderately spinose and hairy. The posterior tibia? are subcylindrical, spinose, 

 and hairy at the apex. The apical joint of the tarsi is much widened at the apex, and 

 furnished with long fulvous hairs, almost concealing the claws. The prosternal process 

 is very prominent posteriorly, roughly sculptured. The mesosternum is dotted with 

 small tubercles. 



On the thorax there are numerous very short black bristles, each one arising from a 

 dull black dot, giving the surface the appearance of being punctured, which, however, 

 is not the case. 



Sab. Sandhills, Baluchistan (between Quetta and Khusan). 



30. Ocnera gracilis, sp. n. (Plate XIV. fig. 8.) 



Elongata, convexa, nigra, sat nitida ; antennis gracilibus, thorace minus crebre 



subtiliter punctato, longe piloso ; elytris basi thorace vix latioribus, postice paulo 



latioribus, convexis, ad apicem gradatim declivis, confertim sat fortiter irregulariter 



granulato-asperatis, breviter pilosis ; pedibus gracilibus, tarsorum posticorum articulo 



basali elongate Long. 6-7 lin., lat. 3-3^ lin. 



This species differs from all others known to me in the form and sculpture of the 



elytra, which, instead of being suddenly declivous at the apex, gradually slope down ; 



the granules which cover the surface are somewhat large, round, and shining, placed 



rather near together, and are not arranged in regular lines ; punctures are also scattered 



in the intervals between the granules. The tenth joint of the antennae is nearly globular, 



shining. 



Sab. Badghis and Hari-rud valley. 



31. Ocnera gomorrhana, Reiche, Ann. Soc. Ent. Pr. 1857, p. 215. 



A single specimen, which appears to be referable to this species, and of which specimens 

 in the Museum are from Sinai and Bagdad. 



Sab. Sandhills, Baluchistan (between Quetta and Khusan). 



