450 WILLIAM G. DIETZ, M.D. 



the elytra, conspicuous white sutural vitta and lateral spot. Dr. 

 LeConte gives the size as 1.3 ram. The eight specimens before me 

 show no difference in the measurement given above. This author's 

 reference to the supposed relationship of the present species to the 

 European C. querceti Gyll.* is erroneous, the latter species is larger, 

 antennal funicle 7-jointed, the vestiture consists of a coarse pubes- 

 cence without sutural vitta or lateral spot of the elytra, the latter 

 are rufous at the apex, the only approach to similarity I can find. 



C medialis Lee. PI. xiv. fig. 29. — Oblong oval, brownish piceous, above 

 clothed with pale, scale-like pubescence, sutural interspa(!e and base of second 

 interspace densely, sides behind the middle of the elytra, less densely clothed 

 with dirty white scales, underside densely clothed with similar scales. Beak 

 slender, curved, finely punctured, nearly smooth towards the apex, finely striate 

 each side towards the base, the latter scaly; antennae slender, inserted two-fifths 

 from the base ( % ), joints 1-3 of funicle long and slender, outer joints wider, 

 club elliptic pointed. Head densely punctured and scaly : prothorax wider than 

 long, one-third wider at the base than at the apex, feebly and couvergently 

 rounded on the sides behind, rather suddenly narrowed in front and broadly 

 constricted at the apex, ocular lobes distinct, lateral tubercles small, acute, dorsal 

 sulcus entire, more deeply impressed near the base, surface finely and not very 

 closely punctured, basal margin straight each side; scutel minute, scaly. Elytra 

 a little wider at the base than the prothorax, longer than wide, sides nearly 

 straight and narrowed behind for three-fourths their length, then obliquely nar- 

 rowed to the apex, posterior callus obvious, muricate, striie well impressed, closely 

 punctured, punctures more or less concealed by the pubescence, interspaces flat- 

 tened, rugose ; pygidium closely punctured aud scaly. Legs, tarsi and claws as 

 in semirufm. Length 2.4 mm. ; 0.09 inch. 



% . Last ventral segment with deejjly impressed apical fovea, limited each 

 side by an oblique acute ridge. 



Hah. — Louisiana : Bayou Sara and New Orleans ; Lake Superior 

 (LeConte). 



A male specimen in Dr. Horn's coll. and four in Nat. Mus. coll. 

 are before, me, and agrees in all particulars with Dr. LeConte's de- 

 scription except that the prothoracic lobes are quite distinct, and 

 tlu! prothorax is not strongly punctured. 



<'. orytlir<»|»US n. s)). — Oblong oval, blackish, legs reddish brown, above 

 clothed with a fine pubescence, consisting of short, suberect, hair-like scales, aud 

 having a faint, brassy lustre. Beak long, curved, somewhat tapering from the 

 base to the apex, striate aud punctured in its basal half, shining, finely i)unc- 

 tured and striolate towards the apex ; antennse slender, inserted a little beyond 

 the middle ( 9 ). joints 1-2 of funicle elongate, the former a little more robust, 

 joints 3-6 gradually shorter, scarcely wider towards the clava, the latter elon- 

 gate acuminate. Head finely and very closely punctured ; prothorax more than 



* Proc. Amer. Philos. Soc. xv, p. 279. 



