212 Arthur M. Lea: 



have seen. The markings, it is true, vary somewhat, like undoubted 

 specimens of p(^«Jc///«///w (my types of cosfipenne were without 

 pale elytral markings), althougli, as a rule, the pallid portions 

 occupy a ntuch smaller area. I thijik, therefore, that even if cosfi- 

 penne is to be referred to penicilUif nm, it sliould be regarded as a 

 distinct variety of that species. 



PSELAPHIDAK. 



Articerus regius. King. 



Mr. Cox has recently taken numerous specimens of this species 

 about Sydney. 



The male has the front femora strongly inflated, and middle pair 

 still more so, the hind pair, however, are normal. In the original 

 description, King noted the middle pair as being strongly spined; 

 the spine referred to, however, is really on the trochanter ; there 

 is also a small tooth on each of the front trochanters. The front tibiae 

 are strongly notched, the n(jtch being marked behind by an acute 

 tooth, and in front by a somewhat obtuse one ; the middle tibiae 

 are less conspicuously notched, and the tooth behind the notch is 

 feeble, but the one in front is distinct and acute. 



The female differs from the male in being slightly smaller, the 

 legs unarmed, femora comparatively thin and of even thickness, 

 and the hind pair the longest, tibiae not notched, and lower surface 

 of abdomen convex, with the sutures straight. 



Both sexes are densely clothed with brick- red pubescence along 

 the middle of the metasternum, the clothing extending to about the 

 middle of the apparent basal segment of abdomen of male, but 

 not quite so far on the female. 



T nif^i plioni!^ fore/Iaferts, Lea. 



A specimen from Townsville (in the Britisli .Museum) differs from 

 the type in being larger (almost 3 mm.), and somewhat darker. 



HiSTFRlDAK. 



Chlamydopsis and allies. 



Hitherto three generic names liave Ikh'Ii usrd in dealing with these 

 curious myrmecophilous beetles, Chlanif/dopsis and Bi/zenia, which 

 are certainly synonymous, and Orectoscelli^. The late Rev. T. Black- 

 burn, in commenting on the great dissimilarity of tlie species known 



