556 Coleopterological Notices, VH. 



minutely impressed at the middle ; surface subimpunctate toward base, sub- 

 scabrous toward the frontal margin ; fovese small, pubescent, situated slightly 

 behind the middle and separated by I3 the total width ; from each extends 

 anteriorly a fine, deep and arcuate groove, the two gradually becoming parallel 

 and uniting by a strongly arcuate moderate impression between the antennal 

 tubercles, which are small but pronounced ; antennte shorter than the head and 

 prothorax, slender, the first two joints larger and equal, three to six equal, 

 minute and feebly transverse, seventh and eighth wider, equal, ninth and tenth 

 successively still wider and more transverse, the eleventh wider, conoidal, as 

 long as the four preceding combined. Prothorax about }4, wider than long, 

 the sides parallel and straight from apical fourth to basal fifth, there strongly 

 convergent and sinuate to the base, rounded and rapidly convergent at apex ; 

 disk broadly, feebly convex, finely, unevenly and not very densely punctate, 

 without trace of discal pit, the lateral fovei3e large, united with the trans- 

 versely triangular median subbasal depression by fine grooves ; from near the 

 centre of the disk a fine carina extends to the basal margin, crossing the me- 

 dian depression. Elytra subquadrate, feebly convex, slightly punctulate, 3^ 

 longer and % wider than the prothorax, the sides parallel and broadly arcuate ; 

 three basal fovese of each strongly developed, the outer continued posteriorly 

 for a very short distance by a feeble and gradually evanescent sulcus. Abdo- 

 men very nearly as long and wide as the elytra, parallel and nearly straight at 

 the sides, moderately convex transversely, the first two dorsals each with a 

 very feeble basal impression in median third of the entire Avidth, but not 

 carinate. Length 0.8 mm. ; width 0.28-0.3 mm. 



Rhode Island (Boston Neck). 



The male of this species differs from that of integer in its 

 slightly larger head, with less abbreviated antennae and more 

 widely separated fovese, in the more transverse prothorax, much 

 less broadly rounded and convergent at the sides toward apex, 

 and in the narrower impression of the basal tergites, which, on 

 the second segment of integer, appears to extend through nearly 

 half the total width, though so feeble as to be scarcely definable ; 

 the pubescence is a little shorter and denser in integer. The de- 

 scribed type is a male, the female scarcely differing however in 

 general form. The series before me is quite extended, and there 

 is scarcely any variation in size ; the males seem to be much less 

 abundant than the females. 



The genera allied to Trimium, forming section 12 of the table 

 previously published by me (Col. Not. Y, p. 442), and section A^ 

 B2 of the arrangement of Mr. Raffray in the "Etude," require 

 very much more elaboration than has hitherto been accorded 

 them. Trimioplectus, which is now represented before me by a 

 good series taken by Mr. Schmitt, must be associated with these 



