534 REVISION OF THE GENERA COLPOCHILA, ETC. 



productis ; prothoracis basi fortiter bisinuata, quam marge 

 anticus fere duple latieri, angulis posticis (superne visis) 

 distinctis subrectis nulle mede productis, (a latere visis) 

 retundatis. [Leng. 9, lat. 5 lines. 



The above description is taken from the labelled type of this 

 insect (which is in the South Austi'alian Museum). It was 

 named by Mr. J. G. O. Tepper (Trans. Koy. Sec. S.A., 1878, 

 p. 64). It would not be possible to identify the insect or 

 even to refer it to a genus by the original description, which 

 states that the " flanges of the prothorax are toothed " and that 

 the antennae are " 10-jointed." The latter of these statements is 

 evidently (although the type has no antennae) a mistake, unless 

 the specimen described was a monstrosity ; the former probably 

 refers to the somewhat sharply produced front angles of the 

 prothorax. 



As regards the specimen itself, it is excessively close to the 

 insect w^hich I take to be Ha^donycha obesa, Burm., but which I 

 do not think is Melolontha obesa, Beisd., (vide infra), and I should 

 have hesitated to treat it as distinct if it had not previoui^ly 

 received a name ; but as it is named, and certainly presents some 

 slight distinctions, it seems well to let it stand for the pi'esent. 



The prothorax of the present species is slightly more than twice 

 as wide as long ; from the front angles (which are well produced 

 and acute) the sides (viewed from above) diverge in a feeble arch 

 to the base, but in their hinder half are very nearly parallel, the 

 hind angles appearing almost right angles. 



This specimen is decidedly larger than any ordinary type of 

 C. obesa, Burm. ; its prothorax is mere narrowed in front ; the 

 front angles of the prothorax are sharper and more produced, the 

 hind angles (viewed from above) appear less rounded olf, and the 

 sides are not more divergent in front of the base than at the base 

 itself ; the pygidium is a little less nitid, and the general form is 

 more elongate and less dilated hind ward. 



S. Australia ; near Monarto. 



