258 MK. J, S. 13ALY ON NEW SPECIES 



G-euus EuEYDEMUS, Chapuis. 



EuRYDEMUs Jansoni, n. sp. Oblongo-ovatis, fulvus, nitidiis, anten- 

 nis extrorsum thoracisqne maculis duabus oblongis nigris ; elytris 

 regukriter fortiter punctato-striatis (interspatiis nitidis), utriuquo 

 plaga magna infra basin posita vix fere ad latus extensa nigra ornatis. 

 Long. 2 lin. 

 Hob. Griiinea, Cameroons. 



Head niticlous, distinctly but not closely punctured ; vertex 

 with a faint longitudinal raised line, which terminates on the 

 lower front in a perpendicular groove ; jaws piceous ; clypeus 

 longer than broad, subcuneiform, its apex broadly truncate, its 

 anterior margin concave-emarginate ; antennae nearly two thirds 

 the length of the body, filiform, five lower joints fulvous, the 

 rest blact ; basal joint incrassate, oval ; the second oblong, two 

 thirds the length of the first ; the third slender, nearly twice as 

 long as the second ; eyes large, moderately distant. Thorax 

 about one half broader than long ; sides rounded and obliquely 

 diverging from the base nearly to the middle, thence obliquely 

 converging and slightly rounded to the apex, binder angle mu- 

 cronate ; basal margin truncate on either side, the median lobe 

 slightly produced, truncate ; upper surface transversely convex, 

 deflexed on the sides, in front finely and sparingly punctured ; 

 median portion of basal margin thickened ; placed side by side of 

 the middle disk are two narrowly oblong black patches. Scu- 

 tellum rather longer than broad, trigonate, its apex obtuse. 

 Elytra broadly oblong, and much broader than the thorax, sides 

 parallel, the apex regularly rounded ; above convex ; each slightly 

 but distinctly excavated below the basilar space, strongly punc- 

 tate-striate, the punctures very large on the subbasal depression, 

 smaller and less deeply impressed below the middle ; interspaces 

 plane, shining, impunctate ; those on the excavated portion of 

 the surface convex ; on each elytron is a large black patch 

 which extends from immediately below the basal margin to a 

 short distance below the middle of the disk, and laterally from just 

 within the outer margin to the third stria from the suture. All 

 the thighs armed beneath with a strong acute spine. 



This species differs from the typical form of the genus in the 

 rather smaller and more widely separated eyes. This character 

 varies in the two sexes of the same species. In E. grandis the eyes 

 are much smaller and more distant from each other in the female 



