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. carmode nsis, Black!)., a species the sex of which 

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

 practically identical w T ith it, except for a rather stronger 

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

 which he has distinguished 0. submuticus from inermis, 

 Macl., is also a peculiarity of the male. 



The known species of the new genus may be tabulated as 

 follows : — 



A. Clypeus rounded or lightly emarginate. 



B. Upper surface very smooth. 



C. Metasternum strongly punctured parvus, Blackburn. 



c. Metasternum unpunctured. 



I). Short king'i, liar. 



d. Elongate prehensilis, sp. n. 



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



a. Clypeus bidentate carmodensis, Blackb. 



Macropocopris prehensilis, sp. n. 



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

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

 niargine rotundato, fronte laevissime puuctato ; pronoto fere laevi, 

 antice et lateraliter subtilissime punctato, haud lato, lateribns 

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

 basi supra haud marginato, medio obtuse angulato; elytris sub- 

 tiliter striatis, striis haud punctatis, interstitiis vix perspicue 

 punctulatis; pygidio subtiliter punctato; corpore subtus loevi, 

 subnitido, metasterno impunctato. 



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



Hob. 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 

 carinse (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. 



