358 Coleopterological Notices, V. 



Head and prothorax equal in width and distinctly narrower than the elytra. 

 Elytra distinctly longer than the prothorax ; pubescence denser. 



capito 

 Elytra not longer than the prothorax ; pubescence sparse ; body slightly 



more slender demissa 



Head and prothorax subequal in width to the elytra ; pubescence dense ; 

 elytra much longer than the prothorax exigua 



I have not been able to discern any marked sexual modifications. 



T. tenuissima n. sp. — Linear, strongly shining throughout, dark pice- 

 ous-brown, the pronotum, tip of the abdomen and legs pale flavate ; antennae 

 dusky, pale toward base ; pubescence sparse, moderately long, subrecumbent, 

 coarse, not conspicuous ; head coarsely, sparsely, conspicuously but not very 

 deeply punctate, the punctures wanting along the median line ; pronotum 

 and elytra very minutely sparsely and inconspicuously punctate, polished, 

 not at all reticulate ; abdomen finely, sparsely but more distinctly and sub- 

 asperately punctured. Head large, fully as wide as the prothorax and as long 

 as wide, the sides behind the eyes straight and feebly divergent to basal 

 fourth, then broadly rounded to the wide neck ; surface with a small deep 

 elongate impression in the middle just behind the eyes ; antennae one-third 

 longer than the head, feebly incrassate, the basal joint much longer than the 

 second, the latter as long as the next two, obconical and nearly twice as long 

 as wide, fourth to tenth very strongly transverse, close but somewhat perfo- 

 liate, feebly increasing in width and also in length, eleventh slightly longer 

 than wide, obtusely rounded at tip, as long as the preceding two. Prothorax 

 about one-third wider than long, the sides feebly convergent and straight 

 from near the apex to the obtuse and indistinct basal angles ; base scarcely 

 as wide as the apex ; disk feebly convex, with a very feeble but entire median 

 impressed line. Elytra nearly as long as wide, equal in width to the protho- 

 rax and quite distinctly longer ; sides straight and parallel. Abdomen linear, 

 rather longer than the anterior parts, at base very slightly narrower, but at 

 the apex of the fourth segment somewhat wider, than the elytra ; first four 

 segments feebly impressed at base ; fifth much shorter than the fourth ; sixth 

 large and distinct. Length (abdomen strongly extended) 1.1 mm. ; width 

 less than 0.2 mm. 



Rhode Island. 



The coarse punctures of the large, posteriorly enlarged head, 

 minute size and linear form, will render the identification of this 

 species quite certain. 



T. capito n. sp. — Piceous to blackish, the legs pale flavate ; antennae 

 dusky, paler toward base ; integuments feebly shining, the head somewhat 

 strongly reticulate, very minutely, somewhat closely punctate ; pronotum 

 and elytra minutely and more densely punctate ; abdomen more asperately ; 

 pubescence rather dense, sparse and longer on the abdomen. Head fully 



