ATTELABIDiE. 205 



DESCRIPTION. 



In sculpture this species for the most part agrees with A. curcxdionoid.es, except that there is an 

 impression between the eyes, and a pair on the disk of the prothorax. The whole of the body is 

 very black, except the shoulders of the elytra, which are covered by a large oblong red spot, the 

 anterior thighs are armed with a minute tooth : the disk of the coleoptera, or elytra taken together, 

 towards the base is depressed ; and the scutellum is obversely triangular, the vertex of the triangle 

 pointing towards the head. 



CVIII. * Genus APOTOMUS. Kirb. 



Antennae inserted in the side of the rostrum near its base, eleven-jointed; short scape and pedicel 

 nearly equal in length, incrassated; six following joints very minute, increasing gradually in 

 width ; the three last joints large, distinct, forming an oblong knob : rostrum ahout the 

 length of the head : prothorax obsoletely lobed behind : scutellum punctiform : elytra fur- 

 rowed, abbreviated : podex uncovered : four posterior legs distant ; anterior tibia? straight 

 not serrulated. 

 This genus, the type of which is Attelabus ovatus Fabr. and Oliv. seems intermediate between 

 Attelabus and Rhynchites. It differs from the former principally in the articulation of the stalk of 

 the antennae, the joints of which, in Apotomus, are comparatively much more minute and shorter ; 

 in the anterior tibia? which are shorter, straighter, and not serrulated ; in its shorter head, and 

 less dilated tarsi. From Rhynchites it differs in the shortness of its rostrum with the antenna? 

 inserted at the base instead of the middle, and having the breast of the male unarmed : from both it 

 differs in the lobed prothorax; in the elytra being obliquely abbreviated internally both at the base and 

 apex; in their furrowed surface; in its naked podex; and, which is a strong character, in having the 

 four posterior legs distant from each other. 



In its lobed prothorax, it agrees with Rhinobatus, Rhynocyllus, Eurhinus, Uliger, &c. : it is 

 worthy of observation, that in this latter genus and Centrinus, the four posterior legs are likewise 

 distant ; and that the males in Centrinus have an armed prothorax like Attelabus. 



(274) 1. Apotomus ovatus. (Fabricius.) Ovate Apotomus. 



Attelabus ovatus. Fabr. Si/st. Ekuth. ii, 426, 55. Oliv. Ent. v. 81, 1 1, 13, t. i, / 13. 

 Length of the body 1^ line. 



Variety B taken by Dr. Bigsby near Lake St. Clair. 



