Genera of the Cossonidce. 523 



to establish the present genus have been communicated by 

 Mr. Janson, and are from British Caffraria in southern 

 Africa. In their fusiform outline, piceous hue, shining, 

 unpubescent surface, and obsolete scutellum, they are at 

 first sight very similar to Mesoxenus (now merged into 

 Amour or rliinus) ; nevertheless the fact of their eyes 

 (although minute) being present, instead of obsolete, 

 throws them into a different, though proximate, section 

 of the Pentarthrides. And, when closely inspected, they 

 will be seen, further, to recede from Amaurorrhinus, not 

 only in their relatively narrower body and more elongated 

 prothorax and elytra, but likewise in their shorter, broader 

 and more parallel rostrum, into which their very much 

 more abbreviated antennas are implanted further from the 

 apex, in their legs (the front and hind pairs of which are 

 a trifle more approximate at their respective bases) being 

 also shorter, in their metasternum being appreciably more 

 elongated, and (together with their first abdominal seg- 

 ment) less scooped-out, or concave, and in the third joint 

 of their feet being more decidedly simple. 



26. HETEROPSIS (nov. gen.\ I am indebted to Dr. 

 Sharp for the remarkable little Cossonid for which the 

 present genus is proposed, and which was captured at 

 Auckland in New Zealand by Mr. Lawson, after whom 

 I have had much pleasure in naming the species. Its 5- 

 jointed funiculus and obsolete eyes (which are minute, 

 sunken, and very rudimentary) place it near to Amauror- 

 rhinus ; nevertheless it differs from the latter, and the 

 cognate forms, in having a developed scutellum ; whilst 

 in its extremely short and broad rostrum (particularly of 

 the male sex), which is a little contracted posteriorly and 

 is divided from the head by a distinct frontal line, and its 

 abbreviated, abruptly-clavate scape, it possesses features 

 which are essentially its own. In other respects, Hete- 

 ropsis is conspicuous for its small size, and its narrow, 

 cylindrical, but somewhat depressed body, for its shining, 

 piceo-castaneous surface (which is very lightly sculptured 

 anteriorly), and for its rather short legs and elongated 

 metasternum. 



27. AMAURORRHINUS (Fairmaire, Ann. de la Soc. Ent. 

 de France, 629. I860). Although the exceedingly short 

 and imperfect diagnosis which M. Fairmaire has given of 



TRANS. ENT. SOC. 1873. PART IV. (OCT.) P P 



