86 Mr. G. J. Arrow on tie 



6(4). Sides of the pronotum without a smooth [Arrow, 



space in the middle punctatissimus, 



6 (3). Sides of the pronotimi very feebly punc- 



tured lentus, Burm. 



7 (2). Propygidium finely and closely striated. 



8 (9). Elytra scantily punctured, with the 



eutural strias obsolescent on the ante- 

 rior half politics, Arrow. 



9 (8). Elytra with deep entire sutural striae 



and numerous confused punctures. 



10 (15). Mandibles deeply notched and trilobed 



externally. 



11 (14). Clypeus subelliptical, not dentate in 



front. 



12 (13). Pronotum with a well-marked impunc- 



tate area before the scutellum eicardi, sp. n. 



13 (12), Pronotum without a well-marked im- 



punctate area before the scuteUum . . borealis, sp. n, 



14 (11). Clypeus triangular, with the apex mi- 



nutely bidentate latus, sp. n. 



15 (10). Mandibles subquadrate, not distinctly 



notched externally rotundus, sp. n. 



16 (1). Hind angles of the pronotum rounded off astove7isis, a^^, n. 



Lonchotus horealis, sp. n. 



Niger, nitidus, corpore subtus rufo, breviter rnfo-hirto, ovatus, 

 rotundus ; capite crebre granuloso, clypeo subelliptico, apice 

 paulo arcuato, baud dentate; pronoto rugose punctate, area 

 lateral! laevigata, lateribus medio subangulatis, angulis posticis 

 obtusis, basi vix sinuato ; scutello fere impunctato; elytris 

 fortiter confuse punctatis, punctis annulatis, lateribus Isevigatis, 

 apicibus obsolete punctatis, stria profunda Integra suturali ; pro- 

 pygidio paulo product©, striis stridulatoriis subtilissimis dense et 

 late prcedito ; pygidio medio nitido, lateribus minute punctato- 

 rugosis; mandibulis extus profunde incisis, trilobatis : 



(5 , capite sat breviter acute cornuto ; pronoto modice late, pro- 

 funde excavato, lateribus utrinque biacuminatis. 



Long. 20-22-5 mm. ; lat. max. 12-13 mm. 



Hob. N. Madagascar : Grande Terre. 



A series of specimens was taken bj Dr. A. Sicard, who has 

 kindly presented examples of each sex to the British Museum. 

 In the best-developed male the thoracic excavation, which is not 

 very wide, extends to within a short distance of the hind mar- 

 gin, but in others it only reaches about the middle. The sur- 

 face of the cavity, as in all the species, is transversely wrinkled, 

 and the rest of the pronotum is coarsely punctured, with the 

 exception of a smooth area at each lateral edge. The middle 

 of the hinder part is visibly, but not strongly, punctured. 

 The elytra are moderately coarsely and rather confusedly 

 punctured, the punctures being absent from the hinder part 



