402 REVISION OF THE GENUS SEIROTRANA, ETC., 



Blackb., its elytral sculpture is widely different, the intervals 

 being uniform and convex, with a slight tendency to waviness; 

 while the punctures are much larger and closer than in that 

 species. This is the only Seirotrana known to me. except S. 

 strigipennis Bates, having no indication of nodulose elytra. The 

 above diagnosis sufficiently differentiates it from S. strigipennis. 



Hyocis bicolor (n.sp. Trachyscelinarum). 



Head, prothorax, and underside dark ferruginous, elytra pale 

 yellow with black markings, antennae and legs pale rufous. 



Head and prothorax closely punctate; antennae shorter than in 

 H. Bakewellii Pasc, with the last joint a lighter colour than the 

 rest. Prothorax transverse, very similar to that of H. Bakewellii 

 but less sinuate at the sides near base, and with posterior angles 

 rectangular; disc closely clothed with whitish hair; median line 

 distinct. Scutellum triangular. Elytra adorned at the middle of 

 the disc with a large O-shaped black mark (this marking sometimes 

 a little incomplete), obscure and irregular black markings near 

 base : striate-punctate, the punctures closer and smaller than in 

 H. Bakewellii, each puncture bearing a short yellow hair. Inter- 

 vals convex. Fore tibiae strongly dilated and bowed, other tibiae 

 straight. Under surface punctate and thinly pilose. Dimensions 

 — 2*5-3 mm. long 



Hah. — Botany Bay, near Sydney, N.S.W. 



I have five specimens of this very distinct insect, taken by 

 myself on the sandhills at La Perouse, Botany Bay. I have 

 compared it carefully with Macleay's species, H. pallida and H. 

 pubescens; also with identified specimens of H. Bakewellii Pasc, 

 H. subparallela Champ., and H. occidentalis Blackb. Mr. Black- 

 burn has also kindly compared it with his other two species, H. 

 nigra and H. variegata. From all of the above it is readily 

 differentiated by colour alone; while the widely dilated fore tibiae 

 further distinguish it from any other Hyocis known to me. 



