BY THOMAS G. SLOANE. 379 



p. 201) seems to be C. subcyaneum. I think it is quite likely that 

 further investigations with specimens from many different 

 localities will show that C. rugatum, Blkb., and 0. sulcaticeps, 

 SI., will have to be placed under C. subcyaneum, perhaps as 

 varieties. 



Carenum subporcatulum, Macl. 



C. subporcatulum, Macl., Trans. Ent.Soc.N.S.W. 1865, i. p. 184; 

 G. politulum, Macl., I.e., 1873, ii. p. 98. 



A comparison of the types of these species in the Australian 

 Museum convinces me of the correctness of the above synonymy. 



Carenum anthracinum, Macl. 



C anthracinum, Macl., Trans. Ent. Soc. 1864, i. p. 135; C. 

 ebeninum, Casteln., Trans. Roy. Soc. Victoria, viii. p. 134. 



C. ebeninum, Casteln., should, from the description, be a 

 synonym of C. anthracinum, Macl.; specimens are in the Macleay 

 Museum labelled " C. ebeninum, Casteln.," which are conspecific 

 with C. anthracinum. Mr. Blackburn has noted the variability 

 in colour of (J. anthracinum (Trans. R. Soc. S. Aust. 1887, x. 

 p. 58); specimens taken by Mr. C. French, Junr., in the North- 

 west of Victoria, vary in colour of the elytra from black on the 

 disc with purple reflections on the sides to black only near the 

 middle of the disc with the lateral declivities bright metallic 

 purple; these specimens cannot be separated from C. anthracinum, 

 and seem also (though a little larger) conspecific with 0. gracile, 

 SI., which in view of their evidence cannot be regarded as more 

 than a variety of C. anthracinum. I do not think C. cyanipenne, 

 Macl., is a species distinct from C. anthracinum (vide Blackburn, I.e.) 



Carenum scaritioides, Westw. 



C. scaritioides, Westw., Arcan. Ent. i. p. 192; C. intermedium, 

 Westw., Trans. Ent. Soc. 1849, v. p. 203; C. atronitens, Macl., 

 Trans. Ent. Soc. N.S.W. 1863, i. p. 137; G. oblongum, Macl., I.e., 

 p. 138; C. nigerrimum, Macl., I.e., p. 176; C. ambiguum, Macl., 



