388 THE CANADIAN ENTOMOLOGIST 



Ceutorhynchus invisus, n. sp. 

 Oval, convex, black, thinly clothed above with appressed, 

 hair-like scales, grayish to pale brownish in colour, rather incon- 

 spicuously condensed in a narrow, basal, sutural spot, and at the 

 base of the pronotal sulcus, and arranged on the elytral inter- 

 spaces in two or three somewhat irregular series; the scales of the 

 elytral striae are just visibly coarser and more uniformly whitish. 

 Antennae entirely piceous, funicle 7-jointed, funicular joints 

 gradually shorter, the second scarcely twice as long as wide, in- 

 serted at the middle of the beak (cf). Beak very little longer 

 than the prothorax, striate and punctate basally, more sparsely 

 punctured and shining apically. Prothorax one-fifth wider than 

 long, moderately narrowed and constricted anteriorly, front 

 margin entire, median line sulcate, lateral tubercles small, obtuse, 

 surface shining and densely, coarsely punctate. Elytra across the 

 humeri four-ninths wider than the prothorax, scarcely one-fourth 

 longer than wide, gradually narrowed from the humeri, intervals 

 rugose, nearly flat, twice as wide as the striae, declivity with some 

 acute granules. Body beneath more closely clothed with broader 

 grayish white scales. Legs moderate, femora toothed, claws with 

 an acute basal tooth rather approximate to its fellow. 



Length 2.35 mm.; width 1.4 mm. 



Aweme, Manitoba, Sept. 23. (Criddle). 



The type is a male, having the last ventral distinctly foveate, 

 the sides of the fovea not elevated, the four posterior tibiae distinctly 

 unguiculate.- 



Using Dietz' table of groups, one is uncertain whether to 

 refer this species to the siihptihescens or sidcipennis group, since 

 the vestiture is neither dense, nor very sparse. Blatchley and 

 Leng unite these two groups" in their own Group "A," and by their 

 table the present species would seem to fall between margmatus 

 and sulcipe?inis, differing from the former by its smaller size and 

 shorter basal tooth of claws, and from the latter, among other 

 characters, by the less deeply sulcate elytra with much less rugose 

 intervals. 



Ceutorhynchus omissus, n. sp. 



Oval, black, opaque, clothed not densely above with short, 



