1166 COLEOPTEEA 



centre, the posterior sculpture being indefinite. Legs moderately 

 stout ; tibiae slightly bent, intermediate densely pubescent near the 

 extremity. 



In C. optima the thoracic constriction does not cause any super- 

 ficial depression ; in 0. ■proha the dorsal depression is not deep ; in 

 the formerly-described species the contraction is continuous, pro- 

 ducing a very evident transverse impression on the dorsum. 



Length, li-lf lines ; breadth, ^ line. 



Howick. Two specimens, under logs. 



2069. C. dorsale, '^-s- Elongate, thickly pubescent ; head and 

 thorax a little shining, infuscate-red, the sides and basal portion of 

 the latter blackish ; elytra opaque, paler in colour ; legs testaceous ; 

 antennse, palpi, and tarsi testaceo-rufous. 



Head as broad as thorax, frontal impressions well marked, not 

 perceptibly punctate, with some slender yellow hairs. Antenna:. 

 robust, elongate ; second joint two-thirds the length of third. 

 Tliorax indistinctly sculptured ; the middle of basal portion, and a 

 large, almost triangular, space on the frontal portion densely covered 

 with fine yellow pubescence ; the rest of the clothing less con- 

 spicuous, except, of course, the ordinary upright hairs. Scutelluvi 

 almost oblong. Elytra elongate, widest behind posterior femora, 

 yet not much broader there than elsewhere ; each with four dorsal 

 rows of distinct but not coarse punctures, becoming finer behind and 

 even quite obsolete at the extremity ; broadly impressed before the 

 middle, faintly fuscous behind that ; covered with greyish-yellow 

 hairs near the middle, the other parts with fulvous or reddish hairs, 

 many being erect and elongate ; the pubescence not straight, but 

 curled, as it were, yet lying flat on the surface. 



Differs superficially from C. piroba in coloration, in the peculiar 

 clothing of the elytra, shorter and broader thorax, longer scutellum, 

 and different elytral sculpture. 



Underside dark-fuscous, abdomen paler, pubescence yellow. The 

 narrow excision of metasternum with slightly-curved edges and pro- 

 longed forwards as a fine channel ; the abdominal process triangular, 

 with a transverse elevation behind ; the basal segment nearly as 

 long as the following two. 



In C. proha the metasternal excision is triangular with straight 

 sides, and the abdominal process is similar in form, quite simple, and 

 on the same plane as the segment itself. 



Length, 2^ lines ; breadth, nearly f line. 



Clevedon. I am indebted to Mr. Munro for two examples. 



2070. C. distilicta, ?'•&■• Body slightly nitid ; pubescence 

 yellow, thicker on elytra than anywhere else, erect hairs numerous. 



Head very indistinctly punctured. Thorax finely punctated. 

 Scutellum transverse. Elytra widest near the base, gradually at- 

 tenitated posteriorly, apices broadly rounded, almost truncate ; 

 punctuation sornewliat irregular at base, more definitely serial near 

 the middle, becoming indistinct behind. 



