436 On a new Genus of Australian Beetles. 



the male it is always considerably narrowed in the middle. 

 This applies equally to the species of the new genus. The 

 type of 0. carmodensis^ Blackb., a species the sex of which 

 Blackburn was unable to decide, is a female, but the male is 

 practically identical with it, except for a rather stronger 

 curvature of the front tibiae. Tlie more dilated prothorax, by 

 which he has distinguished 0. suhinuticus from inermis^ 

 Macl., is also a peculiarity of the male. 



The known species of the new genus may be tabulated as 

 follows : — 



A. Olypeus rounded or liglitly emarginate. 



B. Upper surface very smooth. 



C. Metasternum strongly punctured parvus, Blackburn, 



c. Metasternum unpunctured. 



D. Sliort kingi, Har. 



d. Elongate prehensilis, sp. n. 



b. Upper surface strongly punctured symhioficus, sp. n. 



a. Clypeus bideutate carmodensis, Blackb. 



Macroj^ocopris prehensilis, sp. n. 



Niger, snbopacus, tarsis rufis clavaque antennali flava ; elongato- 

 ovalis, convexus, capite absque carina, clypeo transverse rugose, 

 margine rotundato, fronte lasvissime puuctato ; pronoto fere laevi, 

 antice et lateraliter subtilissime punctato, baud lato, lateribus 

 arcuatis, baud angulatis aut sinuatis, angulis anticis baud acutis, 

 basi supra baud margin ato, medio obtuse angulato; elytris sub- 

 tiliter striatis, striis baud punctatis, interstitiis vix perspicue 

 punctulatis; pygidio subtiliter punctato; corpora subtus lasvi, 

 subnitido, metasterno impmictato. 



Long. 10"5 mm. ; lat. max. 6*5 mm, 



JIah. N, Queensland: Kuranda (Nov. — G. E. Bryant). 



A single male specimen was found. 



M. prehensilis is a large species, slightly larger than any 

 other known, and distinctly more elongate. It is quite black 

 but not shining above and very smooth above and beneath, 

 almost without hair, except upon the legs, with the meta- 

 sternum quite devoid of punctures. The head is without 

 ciirinse (in the male), the clypeus strongly rounded in front 

 and transversely wrinkled above, the forehead very lightly 

 punctured and the eyes fairly large and very smooth. The 

 pronotum is very convex, scarcely perceptibly punctured, 

 with the sides strongly rounded but not angulated, the front 

 angles rather blunt and the hind angles indicated. The 

 elytra are also very convex, very finely and lightly striated, 

 with scarcely perceptible puncturation in the intervals. 

 The pygidium is exceedingly feebly and sparsely punctured. 



