418 WILLIAM G. DIETZ, M.D. 



% . Fifth ventral segment witli transverse oval fovea in its apical half, middle 

 and posterior tibiif distinctly unguiculate at the apex. 



9. Fifth ventral not impressed, tibiae not unguicnlate. 



Hab. — Pennsylvania, Canada, Ohio, Wisconsin, Michigan, Dakota, 

 Colorado, Texas. 



Numerous specimens are befoi'e me. iSome specimens have the 

 hiteral margin of the elytra pale. This species has heretofore been 

 known in collections as C. fiavieauda Boh.,* the description of which 

 is utterly inapplicable in all essential points, save one, to the insect 

 under consideration. Aside from other differences the following 

 characters certainly do not apply here " thorace medio tenuiter cari- 

 nata. Elytra antice singulatim rotundata, thoracis basi multa latiora 

 — ante-mediam fascia transversa communi, subdentata, parce obscura 

 brunneo-squamosa ornati." The size is stated as equal to that of 

 C. quercus F., an insect very much smaller, the largest specimen of 

 which, in my collection, does not exceed 2.5 mm. No mention is 

 made of the lateral or apical pale spots on the elytra or a thoracic 

 sulcus. The femoral tooth is described obtuse, while it is quite acute. 

 Boheman refers this species to Say. I have been unable to find any 

 reference or description of flavicauda in Say's writings. 



C'. Titiosus n. sp. — Oval elliptic, convex, dark piccous: anteniife, tibise and 

 tarsi rufo-piceous. scales on the underside larger, nearly round, dirty gray, not 

 crowded, above clothed with much smaller, oval, grayish brown scales. Beak 

 slender, curved, obscurely carinate from near the l>ase to the apex, densely punc- 

 tured, striolate ; scrobes linear, not expanded before the eyes: antennae inserted 

 a trifle beyond the middle ( "J, ), not very slender, first and second joints of funicle 

 elongate, joints 3 4 equal, outer joints shorter, gradually wider, club elliptoidal, 

 acuminate. Eyes a little convex, a short sulcus in front of each. Head densely 

 and rather coarsely punctured, squamous, front flattened ; prothorax as long as 

 wide, two-fifths wider at the base than at the apex, tlie latter broadly and strongly 

 constricted, sides straight, parallel for two-fifths their length, then obliquely nar- 

 rowed to tlie apical constriction, ocular, lobes distinct, apical margin straight- 

 subangulate each side ; basal margin not emarginate each side, lateral tubercles 

 distinct, acute, dorsal channel entire, more deeply impressed before and behind 

 the middle, surface closely puuirtured. punctures rather large. Elytra oval, about 

 one-fourth wider at the base than the prothorax, a little longer than wide, broadly 

 rounded on the sides and strongly narrowed toward the apex, basal margin ele- 

 vated, striae as wide as the interspaces, not deejjly imi)ressed, jiunctures rather 

 closely approximate, concealed by the scales: intersjiaces flattened, a line of dark 

 brown scales on the middle two-fourths of thesutural inters])ace; metasterinim 

 as in apicali.i. femora subclavate, distinctly toothed, tibia? widened towards the 

 apex, tarsi as in the ))receding sjiecies, claws armed witli a tdotli exlcndiiig a lilllc 

 l)eyond the middle. Length 2.5 mm. ; 0.10 inch. 



«■ Sch., Geu. Cure, viii, p. 397. 



