ADOEETUS. 321 



legs and a very broad head. The clypeus is very broadly 

 rounded, with the front margin strongly reflexed, especially in 

 the middle, and the surface shallowly rugulose. The pronotum 

 is coarsely pitted, with the sides obtusely angulated in the 

 middle, nearly straight in front and behind, the front angles 

 slightly produced and acute, and the hind angles very obtuse. 

 The scutellum is minutely and rugosely punctured, and the 

 elytra strongly and irregularly punctured, with well-marked 

 elevated costa?, bordered on each side with more crowded punc- 

 tures ; the epipleurse are short and the sutural angles sharp. 

 The pygidium is minutely rugose, with rather longer erect setae 

 towards the apex. A sharp continuous carina extends along each 

 side of the abdomen, and the posterior edge of the propygidium 

 is also sharply elevated and united with the lateral carinse by 

 a short ridge which cuts off the last spiracle on each side. The 

 continuous carina thus formed exactly coincides with the outer 

 edges of the elytra. The front tibia is slender, armed with three 

 short sharp teeth and finely serrated above them ; the claws 

 are all entire and only moderately unequal. The edges of the 

 labrnm are broadly serrated, and the rostrum bears a strongly 

 elevated double crest, formed by a longitudinal median carina 

 spreading out on each side at the summit. The antennae are 

 10-jointed. 



The longer front claw on one side is minutely cleft in the only 

 female I have seen of the species, but that is evidently abnormal. 



c? . The extremity of the pygidium is smooth and shining. 



LeiHith, 9-10 mm.; breadth, 4-75 mm. 



AiSSAM: Khasi Hills, Gauhati (May, Pusa Coll.). 



Tyj^e in the British Museum. 



This is one of the group of species to which Ohaus has given 

 the generic name Prionadoretus, on account of the deeply serrated 

 sides of the rostrum. I have not adopted the genus, for that 

 character, like the distinction belween a clothing of setae and one of 

 scales, on which the genus Lepadoretus is based, is one of degree 

 only, and as the known species multiply the dividing-line is likely 

 to become incapable of definition. Dr. Ohaus has apparently 

 not noticed that one of the commonest Indian species of Adoretus, 

 A. limbatiis, BL, possesses a labrum of the Prionadoretus type. That 

 species has another feature of greater importance, which it does 

 not share with the others, viz. an antenna of only nine joints. 

 Ohaus has not mentioned the claws, which in A. nasahs, as 

 in another species in the British Museum, are remarkable from 

 the absence of any cleavage. The peculiar double crest upon 

 the labrum of A. nasalis might have been regarded as a generic 

 feature, but for its absence in other closely similar species. 



341. Adoretus lemniscus. 



Adoi-efus lemnisais, Arrow, Ann. Mag. Nat. Hist. (8) xvi, 1915 



p. 2.32. 

 Adoretun parallelus, Arrow, op. cit. (8) xiii, 1914, p. 598. 



T 



