LeConte.] 



BARIKI. 303 



1. S. tubulatus. Campylorhynchus tub. Say, Cure. 20; ed. Lcc. i. 

 285; Baridius ovatua Lee., Pr. Ac. Nat. Be, Phil., 1868, 363. 



Middle, Southern and Western States. The prothorax is deeply but not 

 very densely punctured, and the scutellar lobe is prominent, and subemar- 

 ginate; the dorsal line is faint, or wanting. The elytra are deeply striate, the 

 stria? are punctured, and the interspaces are narrow, each with a row of 

 fine but distinct punctures, bearing very short white hairs; beneath coarsely 

 punctured, last ventral segment densely punctured. Length 2.5-3 mm.; 

 .10-. 12 inch. 



There may be some doubt about the reference of Say's name to this 

 species in consequence of the expression, "interstitial lines flattened, and 

 with a series of punctures each furnishing a recurved, whitish hair," 

 which would seem referable rather to the genus Zaglyptus (p. 236) of the 

 Ithyporus group of CryptorJiynchini. In other respects the description so 

 well accords with the present insect, that I prefer suppressing the name pro- 

 posed by me as a synonym, until some other insect occurs better suited to 

 Say's description. In case this should happen the name ovatus can be 

 restored. 



MICROCHOLUS n. g. 



Form of body like Saris, but stouter and more convex, with a few scat- 

 tered white scales. Beak as long as the prothorax, curved, cylindrical, 

 rather stouter towards the base, not striate, scarcely perceptibly trans- 

 versely impressed at base: head broad, convex, eyes widely separated, 

 flat, finely granulated, pointed beneath; antennal grooves commencing 

 nearly one-third from the tip, narrow, running obliquely downwards, 

 almost confluent. Antennae with seven -jointed funicle, first joint as long 

 as the three following united, slender, slightly clavate in M. striatus and M- 

 puncticollis, shorter and stouter in If. Icevicollis; second a little longer than 

 third; 3-7 gradually slightly broader; club elongate-ovalj pubescent, annu- 

 lated towards the tip. Prothorax strongly narrowed in front, constricted 

 at tip, sides rounded, flanks concave, so as to cause the lateral edge, though 

 not acute, to appear well defined; base truncate; post-ocular lobes wanting: 

 prosternum short, slightly concave, rather narrow between the coxa?; mid- 

 dle coxa3 moderately widely, hind coxae more widely separated, the latter not 

 reaching the side of the body. Scutellum very small. Elytra truncate at 

 basis humeral angles rounded, a little narrower than the prothorax, sides 

 rounded and obliquely narrowed behind; pygidium entirely covered by 

 the conjointly rounded tips; disc very convex, striae sometimes indistinct. 

 Mesosternum short, ventral segments slightly unequal, sutures scunrly 

 curved. Thighs rather long and stout; tibiae rather short, sinusitis tVebly 

 mucronate; tarsi with third joint very broadly dilated and bilobed; last 

 joint slender, with very small claws. 



Prothorax punctured, constriction near the tip 1. striatus. 



Elytra with well-marked stria? 2. puncticollis. 



Prothorax smooth, constriction distant from the tip 3. laevicollis. 



