540 ME. M. JACOBT ojf THE [May 18, 



colour, and the general shape of the insect is more elongate and 

 cylindrical. 



Ehembastus gbestaekeri, n. sp. 



Bluish black, the basal joints of the antennae and the legs 

 fulvous, above metallic dark blue ; thorax closely aud finely punc- 

 tured ; elytra strongly punctate-striate, the interstices slightly 

 convex. 



Length 1| line. 



Head with a very few fine punctures at the vertex and a central 

 longitudinal ridge ; eyes with a narrow sulcus near the inner 

 margin ; the clypeus separated from the face by a semicircular 

 gi'oove, with a few punctures, its anterior margin fulvous ; palpi 

 slender, fulvous ; antennae rather long, extending below the uiiddle 

 of the elytra, the six or seven lower joints fulvous, the others 

 fuscous, basal joint short and thick, the second scarcely one-half 

 shorter than the third, the following joints more elongate ; thorax 

 nearly twice as broad as long, the sides straight and obliquely 

 narrowed in front, the surface impressed with distinct round 

 punctures, not very closely and irregularly placed, the sides nearly 

 smooth ; elytra strongly punctate-striate, the punctures closely 

 placed, the interstices slightly convex, broad, impunctate, the 

 shoulders prominent : underside blackish, the breast with a 

 bluish gloss ; legs reddish fulvous, the femora with a minute 

 tooth, tarsi obscure piceous. 



Hah. Ashanti. 



Larger than R. pusillus, Har., the thorax much more strongly 

 punctured, aud the punctuation of the elytra distinct to the apex. 

 R. jyunctnto-sulcatus, Fairm., is larger still (5 millim.), the under- 

 side is described as rufous, and the elytral punctuation obsolete 

 posteriorly. 



Ehembastus apicicornis, n. sp. 



Oblong-ovate ; below black, antennae (the last joint excepted) 

 and the legs fulvous ; above metallic dark green or aeneous ; thorax 

 closely and distinctly punctured ; elytra strongly punctate-striate, 

 the interstices convex at the sides. 



Fern. Elytra with an acutely raised sharp costa from the shoulder 

 to the apex. 



Length | line. 



Head remotely but distinctly punctured, the sides forming a 

 ridge or narrow groove at the inner margin of the eyes, clypeus 

 not separated from the face ; antennae two-thirds the length of the 

 body, fulvous, the last joint black, the second joint thickened like 

 the first and but little shorter, third and fourth joints slender, 

 equal, terminal joints slightly thickened, the last ovately widened ; 

 thorax one-half broader than long, subcylindrical, the sides straight, 

 gradually narrowed in front, the basal margin broadly rounded 

 and produced at the middle, the surface closely and rather strongly 

 punctured, the punctures crowded at the sides ; scutellum not 



