EEVISION OF ELEODIINI BLATSDELL. 473 



Casey writes that this form is rehitt'd only to ronti(»u?n, and I can 

 not help deciding- that it is only ont; of the extreme forms of that 

 species. I do not consider that the peculiar form of the upper sur- 

 face of the elytra can give specific standing in this instance. It is 

 true that in the typical contusi/m tlie elytral disc is plane, but in the 

 series before me are examples with flat elytral discs ; others have them 

 slightly concave, Avith margins more strongly reflexed, until finally 

 the extreme forms approach the one here described under eontusum 

 as forma gi^andis^ for example ; the latter is much larger than lami- 

 natum^ the male having a length of 20.5 mm., width 10.5 nnn.; the 

 female, length 19 mm., width 10.5 mm., and is distinctly a much 

 larger form. 



The elevation of the elytral suture is observed in some examples 

 of all of the species known to me. 



The sculpturing is quite variable and in the extremes of a series 

 quite in contrast. Furthermore, the elytral punctures referred to 

 in the description are merely impressed fove», and according to 

 the original remarks do not appear to be in the least setigerous : " the 

 finer, but strong and sparse, asperities are distributed over the sur- 

 face without regard to the punctures, and each bears a strong, thick, 

 semi-erect seta." 



After a careful examination of the sculpturing under high power, 

 I consider that the asperities represent the true punctures, whose 

 margins have been produceel into the minute eminences, each bearing 

 a seta. 



The minute fovese or dents are not the true punctures. The sculp- 

 turing is quite similar in all of the species before me ; even the minute 

 fovese are scattered here and there. The sculpturing of lam hint iim 

 is peculiar only in the apparent abundance of fovea'. 



A comparative study of the elytral seta? shows that in glahnim the 

 setse are the most minute and the stoutest in eontusum, the longest 

 and most slender in planum. 



Not having seen the types nor an authentically identified specimen, 

 my views are, of course, founded upon tlie series at hand and the laws 

 governing homology and analogy. 



EMBAPHION MURICATUM Say. 



Akis '? murlcata Say, Journ. Aeatl. Nat. Sci. Phila., Ill, 1824, p. 251. 

 Embaphioii ini(ricatum LeConte, Coinplete Writings of Thomas Say, II, 



1859, p. 149; in Thomson's Arcana Nat., I, 1859, pi. xii. fig. 10.— 



Horn, Trans. Phil. Soc. Phila., XIV, 1870, p. 320. 

 Emhaphion concavtim LeConte, Proc. Acad. Nat. Sci. Phila., VI. lS5o, p. 



446. 



Oval to oblong-oval, brownish to piceous black, thoracic and elytral 

 nuu'gins very broad and foliaceous, strongly reflexed. 



