304 Mr. K. G. Blair 071 a 



constricto ; elytris elongatis parallelis, sutura elevafca, singulo 

 costis tribus ornato, costa subsuturali elevata rotundata, costis 

 humerali atque intermedia obsoletis, intervallis biseriatim punc- 

 tatis, punctis versus latera et postice obsolescentibus. 

 Long. 12 mm. 



Ilah. Salisbuiy, Maslionaland. 



In form and facies this species resembles R. vimzechi, 

 Clievr., except that the sharp sculpture of the latter is very 

 much smoothed down and rounded, with a marked tendency 

 to obsolescence. It is dark red-brown in colour, smooth and 

 shining ; the head is more elongate than that of mnizechi, 

 more strongly constricted between the base and the eyes, with 

 the puncturation obsolete ; the antenniferous protuberance is 

 much more bulbous, equal in length to the part behind the 

 eyes, the total length of the head being about equal to that of 

 the prothorax. The antennse are nine-jointed : the first is 

 massive and pyriform_, followed by three lenticular perfoliate 

 joints ; the fifth is much more massive, obliquely truncate at 

 the apex ; the sixth joint is very peculiar, seen from in front 

 it is very strongly transverse and reniform, the two lobes are 

 rather far apart and between them is a short pedicle with 

 which the stalk of the succeeding joint articulates, from each 

 of the lobes arises a stout fascicle of hairs which connects the 

 sixth joint to the seventh, seen from above this joint appears 

 narrower than those on either side of it; the seventh joint 

 consists of a lenticular portion attached by a distinct basal 

 stalk to the sixth and further sup])orted by the fascicles of 

 hairs arising from the lobes of the latter ; the eighth again is 

 lenticular^ and tlie terminal joint resembles the eighth but is 

 larger and somewhat oblique, with the apical surface strongly 

 convex, punctured, and setulose. The prothorax compared 

 "with that of mnizechi has the costse broad, low, and rounded, 

 so that the space between the two inner costte is represented 

 by a dorsal median furrow, while that between the discal and 

 lateral costse is visible only as a shallow depression above the 

 lateral angles. The elytra are about three times as long as 

 together broad, each with a single distinct though rounded 

 costa on the disc ; the two rows of punctures between this 

 and the suture, and that bounding it externally, are composed 

 of rather large coarse punctures, in the remaining rows the 

 punctures are much smaller, becoming obsolete behind and 

 to the outside ; the humeri are prominent and rounded, with 

 another obsolete costa. 



Two examples were taken by Mr. Marshall (Feb. •'04 and 

 Jan. '05), crawling up a gate-post. 



