217 



In the male the ventral sutures are very strongly impressed, 

 and there is an oblique membranous interval (very little nar- 

 rower than the segment itself) between the fifth and sixth seg- 

 ments and another behind the sixth segment ; the front tarsi 

 have all the joints deformed (angulated beneath, angularly- 

 emarginate at the apex and more or less transverse), increas- 

 ingly so from the base onwards to the fifth joint, which is not 

 transverse, but is a swollen mass about equal in bulk to the 

 club of the antenna3 and quite three times as large as the fourth 

 joint. One of the claws is simple, the other a broad bent 

 lamina, much like what one of the joints of the antennal club 

 w^ould be if similarly bent. 



In the female the apical joint of the front tibiae is a little 

 swollen. 



JSTotwithstanding the presence of organs of stridulation (in 

 the shape of coarse confused granulation on the middle of 

 the prop3^gidium) the under surface of the elytra has the fringe 

 of hairs which M. Lacordaire (G-en. Col. iii., p. 389 note) con- 

 eiders inconsistent with stridulation. 



I have dissected a specimen and do not find it to differ 

 generically from Pentodon. 



This species is widely distributed in South Australia. I 

 have seen but one male. 



PSEUJDOPIMELOPTIS ffeu. TIOV. 



Pimelopodi afiinis : differt maris capite cornu armato, pro- 

 thorace autice excavate (partis excavatae margine postico 

 medio elevate). 

 The genus JPimelopus was founded by Dr. Erichsen on a 

 female Dynastid from Tasmania. Some time afterwards Dr. 

 Burmeister described the male of a species which he called 

 JPimelopus notlius. M. Lacordaire, in his great work on the 

 genera of the Coleoptera, worked out from the descriptions of 

 these two insects a complete diagnosis of the genus Pimelopus. 

 The examination of a considerable number of specimens has forced 

 me to the conclusion that Pimelopus porcellus, Er., and P. nothus, 

 Burm., cannot be treated as generically identical. I am about 

 to describe a new species from S. Australia as JPseudopimelopus 

 Lindi which is evidently congeneric with and closely allied to 

 P. notlius, Burm., but I have before me other species evidently 

 congeneric with P. porcellus, Er., the males of which differ 

 from the male of Fseudopimelopus in having merely a small 

 tubercle on the head, and the thorax undistinguishable from 

 that of the female. They possess the character of having 

 elytra with a strongly swollen appearance and unusually wide 

 in proportion to the thorax (as in the description of 

 I*, porcellus, Er.) which Fseudopimelopus Lindi has not, with 



