238 ME. M. JAOOBY ON THE [Mar. 15, 



and obliquely narrowed in front, posterior margin produced at 

 the middle and rounded, the surface extremely finely and remotely 

 punctured, the sides iuipunctate, the colour reddish fulvous like 

 the head ; scutellum black ; elytra wider at the base than the 

 thorax, metallic dark blue, regularly and moderately strongly 

 punctate-striate, the interstices finely and sparingly punctured ; 

 underside bluish black ; legs fulvous, the femora unarmed, the 

 tarsi piceous, the metatarsus of the posterior legs longer than the 

 following two joints ; presternum longer than broad, its sides 

 sulcate, the middle narrowed, iuipunctate, fulvous. 



Hah. Abyssinia, Arussi Galla {Botter/o). 



The shape of this species and that of the thorax is more elongate 

 than is usually the case in this genus, but there is a great difference 

 in the two sexes in several respects ; the female is much larger, 

 the antennae have the first six joints fulvous instead of four, the 

 thorax is much more transversely shaped, the tarsi are fulvous like 

 the rest of the legs, and the metatarsus of the posterior legs is less 

 elongate ; but both specimens are undoubtedly identical and were 

 obtained at the same place. Shape and sculpturing, as well as the 

 unarmed femora, will distinguish the species from Z?. cyanipennis 

 Gerst. (for which I at first mistook it) ; the punctate elytral 

 interstices, the colour of the underside, and other details from 

 R. 2}unctato-sulcati(s Fairm. I received tMo specimens from the 

 G-enoa Museum. 



Ehembastus vieidts, sp. nov. 



Dark metallic green, the terminal joints of the antennae and the 

 abdomen nearly black, basal joints of the former fulvous ; thorax 

 strongly and subremotely punctured ; elytra deeply punctate-striate, 

 the interstices longitudinally costate at the sides ; legs greenish 

 piceous, femora minutely toothed, tarsi dark fulvous. 



Length 3-4 millim. 



Head distinctly and remotely punctured, with a small central 

 fovea ; clypeus separated from the face by a distinct groove, punc- 

 tured like the head ; labrum and mandibles piceous ; palpi flavous ; 

 antennae black, the lower four joints flavous, basal joint piceous above, 

 terminal joint elongate-ovate, thickened ; thorax scarcely twice as 

 broad as long, the sides straight, obliquely narrowed towards the 

 apex, the surface strongly and rather remotely punctured, the basal 

 margin accompanied by a row of punctures at the sides ; scutellum 

 smooth, subpentagonal ; elytra slightly wider at the base than the 

 thorax, the shoulders very prominent and smooth, strongly punctate- 

 striate ; the interstices impunctate, longitudinally costate at the 

 sides ; the costae below the shoulders abbreviated and joined at 

 base and apex ; underside nearly black, the breast and legs with a 

 green metallic gloss ; femora with a small tooth, the posterior 

 femora more strongly dentate. 



Hab. Ashantee. 



R. viridis has a somewhat similar-shaped thorax to the preceding 

 species, and may be known, besides this character, by the metallic 



