THE CANADIAN ENT<):M0L0G1ST. 215 



closely placed. The sutural striie are raiher narrower than ii-ual, but 



deeply impressed. The interspaces are narrow, on the disc narrower than 



the striiB ; and uniseriately punctured. These interstrial punctures are 



small at the base bnt become distinctly larger behind and are at times 



slightly confused near the declivital margin, where they are nearly as large 



as those of the striae. Near the lateral margin the interstrial punctures are 



also larger towards the base. Near the declivital margin the interspaces 



are strongly roughened by the large, close, strial and interstrial punctures. 



The punctures of the first two interspaces are granulate, more strongly 



near the declivity. The long hairs are, as usual, from the interstrial 



punctures. The declivity is nearly perpendicular ; li ittened ; coarsely, 



not densely, punctured ; faintly pubescent ; with the sutural interspaces 



raised and very faintly convex in profile. The declivital armature is 



peculiar, and approaches that of litidens. The first tooth, that of the 



second interspace, is small, acute, and curved ventro-mesad. The second 



tooth is longer, sharp and nearly straight ; it arises from the anterior or 



dorsal margin of an acute ridge which extends downward to end abruptly 



(usually) just before the third tooth. This ridge is sometimes nearly 



entire, or it may crenate, emarginate, or bimarginate. When emarginate 



there is the appearance of an additional, small, blunt tooth. The third 



tooth is like the second, long, slender, straight and acute, and is usually 



separated from the ridge mentioned above by a short interval ; it is 



succeeded, after a short interval, by the raised, acute, usually crenate 



apical margin. In some specimens ( (^ ?) the second and third teeth are 



longer and blunt at the tip. 



Twenty specimens from Hemlock, at Ithaca, N.Y. 



This species differs from the latideiis Lee, of California, its closest 

 ally, in the longer pronotum, and distinct declivital armature. In latidens 

 the second prominent tooth arises from the middle of the ridge. The 

 published descriptions of latidens Lee. are given bel )w. Original descrip- 

 tion by Dr. LeConte, Trans. Am. Ent. Soc, 1874, V 72 : '"T. latidtns — 

 Cylindrical, brown, shining, cbthed with long erect yellow hairs, prothorax 

 more parallel on the sides than usual ; not much longer than wide ; more 

 broadly rounded in front j hind angl;js rounded ; disc sculiJtured as in T. 

 pi?ii, more strongly impressed each side near the middle ; elytral stride 

 deep, closely punctured interspaces each with a row of punctures ; pos- 

 terior declivity concave as usual ; subsutural denticle small, acute, next 

 tooth broad, composed of the confluence of three cusps, of which the 



