1 88 MEMOIRS ON THE COLEOPTERA 



wider than the prothorax, but with the sides apically more gradually 

 rounding into the apices, the latter nearly similar but narrower; 

 stria? nearly similar, the intervals a little more convex, the punctures 

 not quite so large and distinctly less close-set. Male with the last 

 ventral evenly convex, with scarcely a trace of impressions but with 

 a very narrow and feeble raised median line apically, the margin 

 with a small and feeble median sinus, the surface without trace of 

 the peculiar vermiculate peripheral sculpture of venator. Length 

 10.8 mm.; width 3.8 mm. New Jersey ........ americana Dej. 



The two species elegans and cribrata of LeConte, are omitted, as 

 I have no representative of them at present ; the first is a remarkably 

 distinct species by reason of the form and sculpture of the pro- 

 thorax, which is as long as wide, with finely reflexed margins, 

 apparently almost as in americana, combined with elytral punc- 

 tures in single series; it must, in fact, be a decidedly isolated form 

 and is not properly classified by Horn, who places it in the division 

 having the broadly reflexed thoracic margins of cribricollis . Crib- 

 rata is related to pilosa but has the prothorax very coarsely and sub- 

 confluently punctured at the sides. The identification of marginata 

 Kirby, given above, is a surmise and may not be correct; marginata 

 is considered to be a synonym of cribricollis by LeConte and Horn; 

 whether this be true or not, the species above described under the 

 name marginata, while closely related to cribricollis, is manifestly 

 not identical. LeConte states that the elytral striae in planipennis 

 are impunctate; the punctures are very small and close-set and 

 could be overlooked very easily; they contrast remarkably in size 

 with the strong strial punctures of brevipennis, which nevertheless 

 was placed in synonymy by Horn, as previously remarked. In 

 regard to americana and venator of Dejean, it can only be said that 

 I have at hand two distinct species of the americana type, but as 

 Dejean does not describe the male sexual characters in either of his 

 species, it is uncertain whether or not they represent them correctly. 

 The author in describing the interstitial sculpture of americana, 

 states that it is " confertissime punctatissimis " and, if this means 

 anything, probably is intended to convey the idea that the punc- 

 tures are very strong and dense; this would suit the species called 

 venator above very well, but not so assuredly the smaller and more 

 slender form, which I have identified as americana, where the punc- 

 tures are evidently less dense than in venator. The original type of 

 americana seems to have been immature, being described as brown. 



