BY A. M. LEA. 493 



The four specimens before me, if males, would be associated 

 with B. hainhridgei, but the sculpture of the prothorax is very 

 different from that of this species. If females (they probably 

 are such), they would be associated with B. laticorne, but the 

 female of that species has the clypeus very different. The 

 elevated parts of the head and the tibial teeth are black. The 

 frontal margins are continued so far in front, that they actually 

 meet in the middle of the front face of the clypeus, so that the 

 clypeal elevation consists of a tubercular prominence instead of 

 a carina: the middle area of the clypeus is practically absent, and 

 the lateral arese considerably enlarged, the frontal elevation is 

 replaced by the small tubercles. The serration of the protho- 

 racic margins is very feeble. The conspicuous ridges or carinee 

 of the prothorax may be regarded as remnants of concentric 

 circles, of which a complete half of the outer one remains, and 

 two fragments of the inner ones, the outer edges of the latter 

 being obliterated, ))ut the inner ones are abruptly interrupted 

 and vertical, so that, from certain directions, the prothorax ap- 

 pears to be trituberculate, although in a ver}^ different way from 

 B. trituherculatunn. 



PoLYSTiGMA viTTicoLLE Macl. (Plate xlviii., fig. 4). 



There are two specimens of this species in the Macleay Mu- 

 seum; the markings are identical, and each is a female. 



Ablacopus t^niatus Schoch., var. melanoptekus, n.var. 



The varietal name is proposed for the form of which one was 

 recorded"*" as having been taken by the late Mr. H. Elgner. 

 There are two other females (from the Coen River) in the 

 Macleay Museum, one of which agrees absolutely with Mr. 

 Elgner's specimen, except that the pale patches on the clypeus 

 are scarcely traceable; the other also agrees well except that the 

 clypeus is entirely dark, that the spot on the mesosternal process 

 is absent, and that the basal and apical markings of the pygidium 

 are connected along the middle. The variety may be readily 

 distinguished from the typical form by its entirely dark elytra 

 and scutellum. 



*Traus. Roy. Soc. S. Aust., 1914, p.l70. 



