192 Coleopterological Notices, III. 



narrowly and deeply impressed in basal third, not carinate anteriorly. Elytra 

 from two to two and one-half times longer than wide, scarcely one-fourth wider 

 than the prothorax ; sides parallel and nearly straight, oblique behind, the 

 apex narrowly arcuato-truncate and minutely emarginate ; humeri narrowly 

 oblique to the base of the prothorax ; disk with unimpressed series of rather 

 coarse, deep, moderately approximate punctures. Abdomen and legs densely, 

 coarsely pubescent and coarsely speckled with subdenuded punctures. Length 

 6.4-9.0 mm. ; width 2.0-3.0 mm. 



Arizona (Peach Springs); Southern California. 



The disposition of the vestiture in this species is nearly as in 

 quadrilineatus, but the hairs are longer, darker and more plumbeous 

 in color and more shaggy. It differs greatly from the form men- 

 tioned in the strong apical lobes of the prothorax with short vibris- 

 sas, in the absence of dorsal carina and denser punctuation of the 

 pronotum, also in its longer beak and smaller and more slender 

 body; in quadrilineatus the prothoracic lobes are almost completely 

 obsolete, the vibrissje being however correspondingly longer. The 

 series before me consists of eight specimens. 



C. circil 111 ductus. — Somewhat slender, moderately convex, suboval, 

 the integuments piceous, feebly shining, the pubescence rather long, moder- 

 ately dense, shaggy, cinereous, almost evenly distributed and without trace 

 of vittae except at the sides of the pronotum and elytra, which are rather 

 widely margined with abruptly denser and whiter pubescence. Head very 

 feebly, transversely impressed at the base of the beak, the latter short, not 

 carinate, densely, rugulosely punctate and much shorter than the prothorax, 

 rather sparsely pubescent. Prothorax very slightly wider than long, the apex 

 subtruncate and but little narrower than the base, the latter rather strongly, 

 acutely cusped in the middle ; sides feebly convergent from base to apex, 

 feebly and evenly arcuate throughout ; disk somewhat coarsely, very densely 

 punctate, the punctures in close mutual contact laterally, slightly separated 

 and with the interspaces rather coarsely, deeply punctulate toward the middle, 

 the pubescence rather sparse and almost completely denuded near the mar- 

 ginal vitta, the basal impression small and feeble ; dorsal carina completely 

 obsolete. Scutellum completely invisible. Elytra a little more than twice as 

 long as wide and nearly one-third wider than the prothorax ; sides straight 

 and parallel, gradually, evenly parabolic in apical third, each elytron with a 

 small apical wisp of denser pubescence ; humeri rather abruptly rounded to 

 the base of the prothorax and distinctly exposed ; disk with unimpressed 

 series of rather small but deep, somewhat distant punctures, the intervals 

 finely but deeply and very densely punctulate. Abdomen black, very densely 

 clothed with long cinereous and somewhat unevenly nucleated pubescence. 

 Legs not very robust, extremely short, densely pubescent, the hind femora 

 extending only to the apex of the second segment. Length 7.4 mm. ; width 

 2.5 mm. 



