622 STUDIES IN AUSTRALIAN ENTOMOLOGY, NO. XII., 



iridipeuuis, Casteln.,* whicli is undoubtedly a species of Pseudo- 

 ceneus. A reference to Germar's description of Aryutor holome- 

 lanus shows that it is a species with the elytra of about the same 

 width as the prothorax, while the species of Pseudocenens have 

 the elytra so decidedly wider than the protharax that this feature 

 alone precludes A. holomelanus from being a member of the 

 senus. There seems no doubt but that A. holonitlamis is a 

 species of Siniodontus. The description suits a species of Simo- 

 dontus sent to me from Adelaide by the Rev. Thos. Blackburn 

 under the name of A. holomelanus so well that I agree with his 

 identification. t It will be as well to note here that Germar's 

 statement " Thorax latitudine haud brevior " is manifestly 

 erroneous. He gives the size of the species as "4 x 1| lin.''; if, 

 however, we take the prothorax as a little narrower than the 

 elytra, and the elytra as described (" thorace latitudine et illo 

 sesqui longiora ") it would give 4 lines as the length of the pro- 

 thorax and elytra without the head (1 line in length in my 

 specimen). In the specimen before me the prothorax measures 

 2x3 mm. I would further add that, by a slip in Germar's 

 description, the punctures of the 3rd elytral interstice are ascribed 

 to the 2nd interstice. 



The late H. W. Bates referred Pterosticlms sollicitus, Erichs,, 

 to Lej)topodas;X and it appears, from data supplied to me by Mr. 

 A. M. Lea, that the species he referred to was one that seems 

 identical with the widel}^ spread species I regard as Poecilus 

 iridipennis, Casteln. If Bates's identification of Pt. sollicitus, 

 Erichs,, be correct, I expect this name must supercede P. iridi- 

 pennis or P. iridescens of Castelnau; however, I hesitate to refer 

 Erichson's name to a winged species in the face of his statement 

 that it was apterous. 



There seem to be four species referable to this genus, viz., 

 Feronia (PvecUus) iridipennis, Casteln.; F. iridescens, Casteln.; 



* Ann. Mus. Civ. Genov. vi. p. 600, 1874. 

 + Vide note by Rev. Thos. Blackburn in these Proceedings, 1889 (2), iv., 



p. 730. 



t Cist. Ent. ii. 326, 1878. 



