288 Mr. C. 0. Waterhouse on new 



gradually narrower anteriorly. The thorax broadest at the 

 base, gradually narrower anteriorly, obliquely narrowed just 

 before the anterior angles, which are acute ; the posterior 

 angles obtuse ; the whole surface very strongly and densely 

 punctured. Elytra more yellow-brown than in the male, the 

 punctuation rather more distinct. 

 Hab. Chiguinda. 



Dynastidse. 



Lycomedes Buckley i, n. sp. 



Nigro-piccus, supra fulvo-furfurosus. 



d . Capito cornu erecto apice tridentato, thorace disco lamina erecta 

 antice concava instructo. 



5 . Capite simplici, thorace crebre punctato. 

 Long. 16 lin. 



This species has the broad form of L. Burmeisteri, Waterh. 

 (Cist. Ent., ii. 1879, p. 422, pi. ix. f. 1), but the floury 

 clothing is of a paler colour. 



<£ . Ocular canthus simple next to the eye (not projecting 

 laterally as in L. Burmeisteri) , but furnished in front with a 

 small sharp tooth, which is directed forwards. The cephalic 

 horn is erect, very slightly curved, expanded at the base on 

 each side into a triangular flat tooth ; the horn itself is some- 

 what enlarged at the apex, where it is divided into three 

 sharp teeth, two in front and one behind them. The thorax 

 is distinctly more angular at the sides than in L. Burmeisteri • 

 the discoidal lamina is erect, flattened, subparallel, obtuse at 

 its apex, slightly concave in front. 



$ . More depressed than the male, with the head and thorax 

 unarmed, the latter shining, coarsely and thickly punctured, 

 the punctures filled with the floury substance. It scarcely 

 differs from the female of L. Burmeisteri ; but the sides of the 

 thorax are a little more angular, and the posterior angles more 

 obtuse. The only tangible difference, however, is in the form 

 of the ocular canthus, which in L. Burmeisteri 'has its front 

 margin straight, its side making with it an angle less than a 

 right angle. In L. Buckley i it is narrower, entirely oblique, 

 a little projecting where it joins the angle of the clypeus, 

 slightly sinuate in the middle, and rounded off posteriorly. 



Hab. Chiguinda. 



Prionidae. 

 Pkotokma, n. gen. 

 General appearance of Navosoma, but with the thorax 



