462 On the Identity of Paussus lineatus and V. Parrianus. 



upper side of the clava. If, as is frequently the case with spe- 

 cimens of Paussus, Thunberg's beetle was gummed on a card, 

 the position given to the clavse in the figure of P. lineatus would 

 have effectually prevented the obtainment of a view of the cavity. 

 Is the species still extant in any Swedish collection ? 



There is something very peculiar in this partial excavation, 

 which stops far short of the extremity of the clava. It lies 

 chiefly under the crenulated portion of the upper and hinder 

 side, shelving gradually towards a longitudinal sulcus bounding 

 the inner margin of the slightly elevated lip of the lower and 

 hinder edge, which falls far short of the superior margin. The 

 upper side of the clava is convex, and is occupied chiefly by the 

 undate ridges and furrows; and there exists a coi'responding 

 row of slight depressions along the anterior margin, which, in 

 certain positions, make the sculpture appear as if it extended 

 over the whole breadth of the clava. The under side is concave, 

 and traces of obsolete transverse furrows are also visible in the 

 deeper portion of the depression. 



Another feature peculiar to this clava is that the last of tlic 

 five crenulations, instead of forming (like the first four of the 

 upper posterior margin) the edge of the excavation, is lobed, and 

 thrown obliquely backward on the thick portion which inter- 

 venes, on the lower face, between the excavation and the sum- 

 mit, and it exhibits, moreover, on the upper side, a long con- 

 cave sinus towards the thickened extremity of the clava. The 

 first four crenulations are curved over the polished internal 

 cavity. The convex thickened part of the lower side towards 

 the extremity is punctate. 



A small polished ball intervenes between the clava and the 

 first joint of the antenna, and plays in a socket in the latter. It 

 is indicated in "Westwood's fig. 3 d. 



In my notes on the capture of P. Parrianus at the Cape 

 (printed in the 5th vol. of the Trans. Ent. Soc. pp. 30-32), I 

 stated that I had detected no sexual distinctions. On a re- 

 examination of fourteen specimens, of which I retain either the 

 perfect form or the abdominal portion, I find in seven indivi- 

 duals two diverging spines on the under side of the centre of 

 the podex, like those which I recorded in my specimen of P. 

 Burmeisteri, W. Similar spines are present in my Futtehpore 

 specimen of P. thoracicus; and they are delineated in the 'Arcana' 

 in pi. 90. f . 2 c and pi. 93. f. 2 b, in specimens of P. Stevensianus 

 and P. armatus. In one of the two figures given by Capt. Boys 

 of P. Fichtelii they are also apparent. They are, doubtless, a 

 sexual appendage ; and if, as I am inclined to believe, they are 

 peculiar to the male, their connexion with crepitation (which I 

 also consider to be a male character), in my specimen of P. Bui- 



