BY H. J. CARTER. 393 



in its application to the elytra between the two former genera, 

 the epipleural fold being subobsolete.* 



The interrupted costse on the elytra cannot be taken as a dis- 

 tinctive character, since it occurs in many species of Adelium; 

 while in five species of Seirotrana, namely, S. mastersi, S. strigi- 

 pennis, S. crenicollis, S. denticollis, and S. uniformis it is replaced 

 by a quite different sculpture. 



I have seen the types of all the described species, except of S. 

 catenulata Boisd., S. elongata Erichs., S. parallela Germ., S. con- 

 gesta Pasc, S. integricollis Haag-Rut., and 8: geniculata Haag- 

 Rut., but I have little doubt of my identification of the above. 



S. catenulata Boisd., is the commonest species in New South 

 Wales, and is found in all our collections. I have taken it plen- 

 tifully near Sydney, Newcastle, and in the Illawarra district. Its 

 chief variation seems to lie, as with other crenulated-sided forms, 

 in the greater or less dentation or crenulation; and I am inclined 

 to think, from my observation of the less crenulate forms, (e.g., 

 S. vidua Carter, S. proxima Pasc, that the female has the more 

 strongly marked incisions on the sides of the prothorax. 



S. elongata Erichs., S. integricollis Haag-Rut., and & paralella 

 Germ., are allied forms that maybe confounded; but are, I think, 

 readily distinguished by the following characters — that is if my 

 identification be correct. 



S. integricollis Haag-Rut. — (1) Colour shining dark bronze. (2) 

 Marginal border of pronotum thick. (3) Anterior angles moder- 

 ately advanced. (4) Elytral costse fairly distinct. (5) Wider 

 form. 



S. elongata Erichs. — (1) Colour black-bronze. (2) Marginal 

 border fine. (3) Anterior angles less advanced. (4) Elytral 

 costse subobsolete. (5) Form intermediate. 



S. parallela Germ. — (1) Colour black-bronze. (2) Marginal 

 border fine. (3) Anterior angles prominent. (4) Elytral costse 

 elevated. (5) Narrower form. 



* See Pascoe's note, Ann. Mag. Nat. Hist. 1869, pp. 43, 44. 

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