NORTH AMERICAN COLEOPTERA. 203 



parallel on the head, divergent on the olypeus. Thorax less than twice as wide as 

 long, sides arcuately narrowing from the basal angles to the front, hind angles 

 very little prolonged and with a very distinct carina close to the lateral margin 

 extending half way to apex; disc moderately convex, basal region scarcely de- 

 pressed, surface rather finely sparsely punctate. Elytra gradually narrower pos- 

 teriorly, finely striate, strife finely punctured, intervals flat biseriately and rather 

 sparsely punctate. Prosternal strise entire, deep, parallel, the space between them 

 nearly impunctate. Sides of metasternum coarsely punctate; abdomen coarsely 

 not closely punctate, the intervals finely alutaeeous. Length .08 inch; 2 mm. 



This species and the preceding are the only ones in which the eye has 

 the deep triangular impression in front, and the head strongly bicarinate- 

 The hind angles of the thorax in the jyiignax has a longer and more dis- 

 tinct carina than has been observed in any other species. 



One specimen % , Florida. Cabinet of Mr. Ulke. 



T. Chevroljiti Bouv. — Brownish or ferruginous, moderately shining, sur- 

 face rather coarsely pubescent. Head sparsely punctate, front obtusely bicarinate> 

 the carinse distant and parallel. Thorax nearly twice as wide as long, much nar- 

 rowed in front, sides feebly arcuate, widest in front of the hind angles which are 

 prolonged and indistinctly carinate, disc moderately convex, basal region not de- 

 pressed, surface rather coarsely punctured, more densely at the sides and base. 

 Elytra slightly narrower than the thorax, somewhat narrower posteriorly, surface 

 striate, striae distinctly impressed and punctate, intervals very regularly biseriately 

 punctate with extremely minute punctures intermixed. Prosternum nearly 

 smooth with very few punctures, the striae deep, parallel and entire. Metasternum 

 sparsely, rather finely punctured, abdomen more coarsely punctured, rather densely 

 at the sides and apex, sparse at middle. Length .10 inch ; 2.5 mm. 



This species is readily known by its obliquely impressed eyes, bicari- 

 nate front and rather coarse punctuation. It varies in length a little 

 below and above the measurement given. 



Widely distributed from the Xew England States to Louisiana and 

 Iowa. 



T. iiieiltlax n. sp. — Oblong, moderately shining, ferruginous or reddish 

 brown, moderately densely finely pubescent. Front sparsely, rather finely punc- 

 tate, obtusely bicarinate, the carinse distant and parallel. Thorax not quite twice 

 as wide as long, strongly narrowed in front, sides feebly arcuate, hind angles pro- 

 longed and acute, not carinate ; disc moderately convex, basal region somewhat 

 depressed, surface closely and rather coarsely punctate. Elytra not wider than 

 the thorax, striate, striae punctured, intervals flat, very finely and indistinctly 

 biseriately punetulate. Prosternum very nearly smooth at middle, the striae deep, 

 entire and slightly divergent in front. Metasternum and abdomen coarsely and 

 rather closely punctate. Length .08-. 10 inch; 2-2.5 mm. 



The only species with which it might be confused is sericeus, which 

 is much more finely and sparsely pubescent and with shorter prosternal 

 strise, the prosternum distinctly punctate in front. 

 Occurs in the Sacramento Valley, California. 



