NORTH AMEKICAN COLEOPTERA. 133 



interstitial setse very fine, short, hair-like, scales more condensed on the basal 

 third of the sutural, and a short line on the third and seventh (humeral) in- 

 terspaces. Prosternum deeply emarginate, postocniar lobes prominent. Legs 

 slender, tibise nearly parallel in their apical lialf, setnlose within, ai)ical hooks 

 distinct; tarsi piccous, slender, fourth joint longer than the tiiird and projecting 

 as much as the length of the latter; claws connate beyond the middle. Length 

 3.0 mm.; 0.12 inch. 



Hah. — Texas. 



A single $ specimen in Dr. Horn's collection is before nie. 

 Easily recognized by the evenly punctured thorax, almost entire 

 smooth dorsal line, the nearly unifbrndy colored, gray scales and 

 the slender tarsi. 



S. lliorio n. sp.— Ovate, convex, pitchy black, legs rufopiceous; densely 

 clothed with dark brown, or blackish scales, inconspicuously mottled with pale 

 brown or white on the upper surface, those of the underside grayish white. Beak 

 longer than head and prothorax, feebly curved, slightly tapering from the base, 

 rather coarsely punctured and sparcely clothed with filiform scales from base to 

 the insertion of the antennae, finely punctulate and shining in its apical half, 

 feebly subcarinate, the carina finely canaliculate on a level with the insertion cf 

 the antennae; latter slender, first and second joints of funicle elongate, former 

 conspicuously longer than the latter, which is fully one-half longer than the 

 next, third joint not transverse, about as long as wide, outer joints of funicle 

 but little wider, club not very densely pubescent. Head finely alutaceous, front 

 punctured with a few scattered scales. Prothorax somewhat shining, scarcely 

 wider than long, broadly but not strongly constricted at the apex, regularly 

 rounded on the sides, about three-fourths as wide at the apex than at the base; 

 surface rather densely, but uotcoarsely punctured ; punctures superficial, sparsely 

 scaly: scutel small, glabrous. Elytra two-fifths wider at the base than the pro- 

 thorax, oval, convex, widest about the middle, sides rounded, striie distinct, 

 punctures conspicuous, remote; interstitial setae very fine, short, hair-like; a 

 pale line on the base of the third and seventh interspaces, the pale markings on 

 the disc are generally arranged in oblique or subtransverse lines. Prosternum 

 deeply emarginate, postocniar lobes prominent. Legs slender, tibiae scarcely 

 widened to the apex, apical hooks small, but distinct; tarsi stout, fourth joint 

 projecting less than the length of third ; claws small, connate beyond the middle. 

 Length 2.75—3.0 mm. ; 0.11—0 12 inch. 



Hub. — Pennsylvania, Dacota. 



Might be confounded with either of the three preceding species ; 

 it differs from squalklus by the f(.)rin of the beak and thorax and the 

 dark color of its surface ; from setidosm in form of prothorax and the 

 scarcely visible elytral setJB ; from cinerasce/is, by the different 

 coloration of the scales and the more coarsely and less evenly punc- 

 tured prothorax, with rarely a trace of a smooth median line ; from 

 the three following species of this group it differs by its larger size 

 and the closely approximate tarsal claws connate beyond the middle. 



TRANS. AM. ENT. SOC. XXI. APRIL, 1894. 



