1877.] MR. M. JACOBY ON NEW COLEOPTERA^ 511 



to the base slightly sinuate, with the posterior angles depressed and 

 acute ; a transverse depression, bounded on each side by a short 

 longitudinal ridge, is situated near the base. Surface moderately 

 convex, entirely impunctate; scutellum broad, semiovate, smooth. 

 Elytra broader at the base than the thorax, slightly widened behind, 

 apex rounded ; a short longitudinal depression is placed near the 

 base of the shoulders. The entire surface of a light brick-red colour 

 without gloss, finely and closely punctate ; underside and legs black. 



Length 3| hues. 



Hab. Guatemala. 



Collected by Mr. O. Salvin. 



Genus Megascelis, Latreille. 



2. Megascelis purpureicollis, sp. nov. 



Elongate, rather robust. Head shining coppery red, closely punc- 

 tate, covered at its lower half with rather long golden pubescence, 

 and traversed through its entire length by a distinct median groove ; 

 eyes emarginate ; epistome greenish black ; sides metallic, separated 

 from the front by several strongly raised tubercles ; antennae with 

 the first three joints testaceous, the rest fuscous. Thorax cylindrical, 

 constricted distinctly behind the middle, of the same colour as the 

 head, very finely punctate and rugose, covered almost entirely by 

 yellow golden hair. Scutellum subquadrate, clothed with greenish 

 golden pubescence. Elytra parallel, dark purplish, with about ten 

 rows of elevated longitudinal ridges, the interspaces of which are di- 

 stinctly transversely wrinkled, covered entirely with short golden 

 pubescence, more strongly marked along the suture and the lateral 

 margins, and plainly visible to the naked eye. Body below fuscous, 

 with a metallic hue and silvery pubescence ; legs flavous, tarsi 

 almost black. 



Length 3 lines. 



Hab, Chontales, Nicaragua. 



Collected by Mr. Janson. 



Clythrin^. 

 Genus Dachrys, Lacordaire. 



3. Dachrys bipartita, sp. nov. 



Oblong, widened behind ; head distinctly and somewhat coarsely 

 punctate, especially near the inner border of the eyes, black, shining ; 

 antennae with the four basal joints fulvous, the rest black, the latter 

 colour also occupying partly the first joint in some specimens ; in 

 length they do not reach to the base of the thorax, and have the 

 first joint very swollen and almost globular, the second extremely 

 short, the third nearly three times the length of the second and 

 thickened at its apex, the fourth a little longer than the second, and 

 the rest transverse, subquadrate. Thorax transverse, with the an- 

 terior margin not advanced in iVont, and the posterior slightly lobed 

 in the middle, the sides very slightly, the posterior angles strongly 

 rounded, the anterior ones distinct ; surface shining black, every- 



