CEPHALOLEIA. • 61 



Mas. Abdominis segmcnto anali fortitcr sinuato. 

 Long. 2 lin. 



C. elongate, much flattened above, shining black ; sides of thorax 

 narrowly edged with piceous. Head distinctly punctured ; front 

 and upper portion of face with a shallow grooved lino running 

 down their middle ; antennae filiform, half the length of the body, 

 basal joint incrassate, longer than the second. Thorax transverse, 

 nearly twice as broad as long ; sides rounded and slightly dilated, 

 narrowly margined, emarginate at the base, their outer edge 

 irregularly toothed, subci-enate, obscure piceous ; apical margin 

 regularly concave between the anterior angles, the latter ob- 

 tuse ; above subconvex from side to side, smooth and shining, 

 disc finely punctured, sides covered with large deeply impressed 

 punctures. Scutellum smooth, impunctate, transversely impressed 

 at the base. Elytra broader than the thorax, oblong- elongate ; 

 shoulders rectangular, the humeral angles obtuse ; sides parallel, 

 narrowly margLiied, the outer edge reflexed and minutely serrulate, 

 narrowed towards the apex, the latter subacutely rounded ; above 

 flattened, slightly convex on the sides and subsinuate below the 

 shoulders ; surface shining, each elytron ^ith eleven rows of 

 distinct punctm-es, the first abbreviated. Pygidium coarsely 

 punctured, its apex obtusely rounded. Beneath black ; tarsi oli- 

 scure piceous. 



Male. Anal segment of abdomen (Tab. III. fig. 32) deeply 

 sinuate. 



Rah. Santarem, Upper Amazons. Collected by Mr. H. "W. Bates. 

 Unique, in the British Museum collection. 



This insect is at once separated from the rest of the black species 

 by its extremely flattened form and by the shape of the thorax. 



33. Cephaloleia Chevrolatii, n. sp. 



C. elongata, modice convexa, dorso subdepressa, nigra, nitida ; tho- 

 race elytrorumque margine fulvis, his plaga humerali nifo-picea ; 

 subtus fusca, piceo tincta. 



Mas. Abdominis segmento anali late emarginato, medio sinuato. 



Long. 1-2- lin. 



C. elongate, moderately convex, subdepressed along the back, shining- 

 black. Antennae subfiliform, half the length of the body. Thorax 

 quadrate, rather broader before the middle ; lateral border straight. 

 rounded in front, narrowly reflexed, not produced beyond the 

 apical margin, anterior angles rounded, obtuse, posterior acute ; 

 surface smooth, convex from side to side, deeply but subremotely 

 punctured, the central line impunctate ; fulvous, anterior edge 

 alone black. Scutellum shining black, impunctate. Elytra rather 

 broader than the thorax ; sides parallel, the apex regulnrly 

 rounded ; above moderately convex, indistinctly flattened along the 

 suture, sides narrowlj' margined, reflexed; finely pnnctate-striate. 



