338 Mr. G. J. Arrow on a ConirihnUon io the 



strigoso, pygidio fere Isevi, lateribus solum paulo punctatis ; meta- 

 sterni lateribus dense punctatis et rufo-hirtis : 



cj, lateribus niagis parallelis, capite breviter acute cornuto, cornu 

 recurvato ; protliorace profunde excavato, fosspe lateribus carinatis, 

 antice et post medium utrinque obtuse dentatis, fundo liuud fortiter 

 rugoso. 



Long. 22-25 mm. Lat. max. 12-14 mm. 



Hal). S. Madagascar : Fort Dauphin. 



A number of examples, chiefly females, were collected 

 by Mr. G. F. Scott-EUiot. Tliis species also is much like 

 L. Icntus, Burm., and of the same size and shape, but is 

 very readily distinguishable. It is remarkable for the 

 feeble and scanty puncturation of the elytra, the punctures 

 scarcely extending beyond the middle and not forming 

 regular rows. The propygidium is very finely striated, as 

 in L. punctatissimus and the pygidium almost smooth, 

 although more punctured in the female than in the male, 

 as in all the species. The prothorax of the male is more 

 deej)ly and broadly excavated than in either of the other 

 species I have named and the sides are more closely 

 punctured than in L. Icntus, but less so than in L. 

 jpunctatissimus. 



In the African genus Ptjcnoschema the pygidium and 

 propygidium are generally densely covered with pubescence 

 in the female and sometimes in the male also. In certain 

 species the males exhibit traces in this region of a fine 

 transverse striation on each side of the median line, 

 representing the stridulating organ of Lonchotus and many 

 other genera, although scarcely in a sufficiently perfect 

 condition to be functional. In a new East African species, 

 however, this structure is well developed. I have described 

 this species as follows : — - 



Pycnoschema musiea, sp. n. 



Rufo-picea, niLida, elongata, subcylindrica, capite in utroque 

 sexu acvxte cornuto, clypeo sat longo, parum punctato, medio dilatato, 

 cantho fere quadrato, fortiter punctato ; protliorace fortiter inae- 

 qualiter punctato, lateribus et dorsi medio parcius atque subtilius, 

 undique valde marginato, angulis omnibus obtusis ; scutello 

 parcissime punctulato; elytris baud profunde gerainatim striato- 

 punctatis, interstitio primo marginibusque postice irregulariter sat 

 crebre, reliquis parcissime, punctatis : 



