128 Coleopterological Notices. 



The species is represented by two specimens which do not indi- 

 cate any variation. 



S. iiifidlis Melsh. — Proc. Ac, Phil., II, p. 102.-r-Pale reddish-fljivate 

 throughout, very convex, strongly shining, totally impunctate, the fine re- 

 cumbent hairs rather long. Head very feebly reticulate in transverse wavy 

 lines ; antennae rather robust, third joint shorter than the next two together, 

 distinctly clavate, fourth shorter than the fifth, outer joints of funicle more 

 robust, club moderate, slightly more robust toward apex, ninth scarcely 

 longer and a little narrower than the tenth, eleventh two-thirds longer than 

 the tenth. Prothorax rather more than twice as wide as long, very obsoletely 

 reticulate ; basal lobe and bead almost completely obsolete. Scutellum ogival, 

 wider than long. Elytra slightly attenuate and narrowly rounded at apex, 

 the discal stria very narrowly separated from the suture at apex, obsolete at 

 basal third ; surface minutely and distinctly reticulate in transverse wavy 

 lines throughout, the minute recumbent hairs arranged in regular series, the 

 punctures not evident, each being entirely filled by the hair. Abdomen feebly, 

 coarsely reticulate, distinctly asperately punctate, coarsely pubescent. Legs 

 rather short and robust ; tibise short and broad, coarsely spinose ; terminal 

 spurs of the posterior very minute, subequal, not longer than some of the 

 spinules of the terminal fimbria; corresponding tarsi short, very slightly 

 longer than the anterior, the basal joint relatively long, about three-fourths 

 as long as the second which is shorter than usual. Length 1.3 mm. 



New York; Iowa; Texas. 



The metasternum is reticulate at the sides, the process moderate 

 in width, coarsely sparsely setose, the mesosternum in front of it 

 much broader and distinctly prominent. 



This minute species is very distinct and, as far as 1 have seen, 

 has no very close allies; it is the only species in which the punc- 

 tures of the elytral series become completely invisible, and confused 

 with the fine reticulation of the surface. In very pale specimens 

 the chitinous cells of the elytra surrounding the base of the hairs 

 become darker, giving the appearance of series of coarse areolae or 

 punctures by transmitted light and under low magnifying power. 

 The form' of the body is extremely convex, resembling some of the 

 small convex species of Cercyon. 



The minute setigerous punctures of the elytra, described under 

 Phalacrus, are observable here to a very limited extent. 



S. aquatilis Lee. — Proc. Ac. Phil., 1856, p. 17. — Almost evenly elliptical, 

 about two-thirds longer than wide, ochreous-flavate throughout, shining. 

 Head excessively finely, sparsely punctate and very finely, feebly reticulate ; 

 antennae nearly as in iiitidus. Prothorax rather short, much more than twice 

 as wide as long ; basal lobe very broad and extremely feeble, bead almost 



