BY THOMAS G. SLOANK. 595 



ocular prominences much more prominent (in P. dilaticeps I would 

 call these features prominent, in P. macleayi depressed); prothorax 

 (5-9 X 9-6 mm.) with lateral basal impressions concave, and 

 extending laterally to the margin of the prothorax ; elytra 

 (16-5 X 11-4 mm.) less convex; third, fifth and seventh interstices 

 less raised, particularly on apical half; seventh less raised in all 

 its length, carinate only near base, hardly carinate near apex (in 

 P. macleayi the seventh interstice is carinate in all its length, 

 strongly so on apical curve). Length 30, breadth 11-4 mm. 

 Hah. — North Queensland. 



Genus Castelneaudia. 



Tschitscherine, Hor. Soc. Ent. Ross., xxv., 1891, p. 166. 



Homalosoma, Boisduval and other authors {710771. proioc). 



Trichoster7ais, Chaudoir and other authors {nom. prceoc). 



Nu7ms, Motschulsky and other authors (in part). 



Oynocycla, Tschitscherine (subgen. 1902). 



As noted above, the names Ho7nalosoma and Trichosternus 

 cannot be maintained when the laws of nomenclature are strictly 

 enforced. N^xrus is in a similar position, Nura being already in 

 use when it was proposed. It, therefore, becomes necessary to use 

 the name Castelneaudia (type Ho7nahso7na nitidicolle, Casteln.). M. 

 Tschitscherine* considers Nurus a genus absolutely self-contained, 

 and divides it into two subgenera, viz., Nurus (type N. hrevis, 

 Motsch.) and Pachymelas (new, type N. curt^is, Chaud.). I had 

 formerly merged N^iru^ with Castelneaudia, and still see no e'ood 

 reasons for removing Nirus hrevis and allies from that position; 

 but Pachymelas, I think, might with advantage be constituted a 

 distinct genus. Omocycla is a division which to me does not 

 appear to require a separate name. 



I take this opportunity of saying that I now concur with M. 

 Tschitscherine in his view that it is quite inadmissible to merge 

 Loxodactylus with C astehieaudia, as I had formerly done. 



* Hor. Soc. Ent. Ross., xxxv., 1902, p. 516. 



