8o COLEOPTERA 



the length of the second ; joints three to five about equal, each much 

 more slender than, but nearly as long as, the second ; sixth obconical, 

 shorter than fifth ; club large, rather loosely articulated, its basal joint 

 longer than broad, obtriangular, the next shorter, sub-obtriangular, the 

 terminal joint largest, obtuse. Head subovate ; labrum very transverse, 

 emarginated, and ciliated ; epistome emarginated in front, with raised 

 margins ; eyes large, prominent, their greatest bulk above, narrowed 

 below. Prothorax convex, margined, transversal, narrowed anteriorly ; 

 its apex bisinuated or emarginated, the base with a slight sinuation at 

 each side of the middle. Sciitclliim triangular. Elytra (in the typical 

 species) very convex, obovate, considerably narrowed posteriorly, 

 broader than the thorax, and rather more than twice its length. 



Legs long and rather slender ; femora somewhat compressed ; tibix 

 straight, spinose, wnth rows of short spines ; tarsi elongate, pilose under- 

 neath ; second joint and fifth longest, about equal, fourth shortest ; 

 claws toothed at base ; anterior tarsus with the four first joints obtri- 

 angular ; front tibia with hooks at apex. 



Front coxce contiguous. Alesosternal process triangular, elevated in 

 front only, and forming an almost linear projection between the inter- 

 mediate coxre ; metasternum a little elevated at the middle, straight 

 behind, except where it is slightly produced between the hind coxae. 

 Abdomen with six segments, the last small. EpipleurcB attenuated 

 behind, projecting below the body. 



Note. — The above description is from specimens in my own collec- 

 tion, agreeing tolerably well with White's specific description, but his 

 generic diagnosis is so meagre and inaccurate (for instance, he says the 

 antennje are apparently eight-jointed) that I thought it better to re- 

 describe the insect. The genus is placed by Lacordaire with the 

 Amarygmides, owing, no doubt, to his having been misled by the 

 characters given by Mr. White. 



147. R. modestuS, White; Voy. Er. Terr., Ins., p. 11. 

 Head, thorax, scutellum, under-side and legs black ; elytra of a 

 deep metallic green, with ten longitudinal, finely punctured striae, the 

 marginal not reaching the base, those nearest the suture deepest ; head 

 in front of eyes, with two impressed dots, above very finely punctured ; 

 thorax with the side-margin somewhat hollowed above, hind-margin 

 with two distant impressed points. 



Note. — No size is given ; my specimens, when set out, measure 2| 

 lines in length by ih in breadth. The elytral striae do not always attain 

 the base, those on the disc are the most shallow, and the interstices are 

 punctated ; the prothorax is finely and distantly punctured ; the legs 

 and palpi are piceous, the body is finely pilose underneath ; and the 

 colour of the body is variable, sometimes exhibiting a reddish hue. 



148. R. pedinoides, White; Voy. Er. Terr., Ins., p. 12. 

 Bronzy black ; elytra with ten longitudinal strife, rather deeply 

 grooved, finely punctured and running up close to the base ; clypeus 

 straight in front ; thorax somewhat flattened on the sides, with two 

 distant impressed points behind. 



