new Species o/Prionidse. 223 



Acanthophorus rugiceps, sp. n. 



3 . Piceo-niger, subnitidus ; capite sat valde irregulariterque 

 rugoso, area angusta longitudinal! levi, oculis supra distantibus ; 

 pronoto (in medio excepto) sat dense punctato et versus latera 

 rugoso ; elytris subcoriaceis minute punctulatis, area parva 

 utrinque paullo pone basis medium sat dense forti usque punc- 

 tata ; mandibulis elongatis, valde punctatis, utrisque intus paullo 

 ante apicem dentibus tribus vel quatuor armatis ; antennarum 

 articulis 6°-10 m apice intus breviter angulato-productis. 



Long. corp. 60, mandib. 16 mm. ; lat. ad bum. 20 mm. 



Hab. Bombay? 



Blackish brown in colour. Head irregularly and rather 

 strongly rugose, except along a narrow median longitudinal 

 area; eyes widely separated above (the interval between 

 them equals 8 millim. in the male type), each limited at its 

 inner or upper border by a rather prominent ridge, which is 

 continued a short way beyond the hind border of the eye. 

 Mandibles elongated, curved, pointed at the apex, and each 

 furnished with three or four teeth on its inner side beyond 

 the middle of its length. Pronotum rather closely and 

 strongly punctured, except along a narrow mid-dorsal area, 

 and distinctly rugose towards the sides. Elytra slightly 

 rugulose and somewhat coriaceous in appearance, very feebly 

 and sparsely punctured except over a small area on each, 

 which is placed a short way behind the middle of the base. 



Orthomegas similis, sp. n. 



0. cinnamomeo persimilis, sed paullo major, mandibulis ( c? ) spina 



dorsali multo altiore armatis ; oculis supra latius separatis. 

 Long. 62-74 mm. 



Hab. Brazil. 



Mandibles horizontal, each in the male with a strong dorsal 

 spine directed almost perpendicularly upwards, and, like the 

 mandibles themselves, fringed with tawny hairs on the inner 

 side. Head with the eyes separated from one another above 

 by a rather broad interval (2^—3 millim.). First joint of the 

 antennse devoid of pubescence. Sides of the prothorax each 

 with two or three short spines, in addition to the anterior and 

 the strong posterior spine ; two of these spines are generally 

 distinct and acute, the third (that next the anterior spine) is 

 very small and sometimes obsolete. 



From 0. cinnamomeus, Linn., the present species is distin- 

 guished by the much stronger dorsal spine with which each 

 of the mandibles is provided, and by the wider interval which 



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