496 Tvnnsactions South African PhilosopJiical Socictj/. [vol. xii. 



triangularly from base to apex, narrowly l)i-carinate on the upper 

 side and having foui- transverse carinte, tlie apical and the supra- 

 apical of which extend right across the outer part and form there 

 two very distinct ridges, apical part hardly hollowed and having near 

 the outer angle a bi-earinate, longitudinal, dentiform process, and in 

 the inner angle two compressed, ciliate spurs similar to the inter- 

 mediate ones, Imt a little shorter. 



Ch.4:toca\thus ixsuetus, n. spec, 

 Plate XXXIX., tig. 21. 



Chestnut brown, very briefly pubescent on the upper side, but 

 with pectus, legs, and the outer basal margins of the prothorax 

 very densely hairy, the hairs are flavous and very long ; the labrum 

 is also pubescent, and there is a bunch of long, pubescent hairs on 

 each side of the head above the point of insertion of the antennse ; 

 head densely granular ; antennae flavous ; prothorax covered with 

 ■small granules set close to one another ; scutellum rugose ; elytra 

 covered with elongate, depressed granules set very close to one 

 another, and having only one distinct stria along the suture and a 

 faint trace of one or two more on the discoidal part ; pygidium finely 

 aciculate, pubescent, abdominal segments closely scabrose ; femora 

 and tibite hardly punctate ; metasternum slightly scabrose and grooved 

 longitudinally. 



Length 8f-9 mm. ; width 4^ mm. 



Hab. Cape Colony (Fraserburg, Carnarvon). 



I have seen only two female examples of this remarkable insect, 

 the habits of which are iinknown. 



I 



(iEX. PH.EOCEOUS, Casteln., 



Hist. Nat., ii., 1840, p. 108. 



SilpJiodi's, Westw. 



Mentum very concave, longer than broad, rounded laterally 

 especially at the base, not deeply emarginate at the tip, and set 

 with only a few rigid setae, ligula bi-lobate, membranous, with the 

 lobes slender at the tip and very long, palpigers well developed, 

 somewhat broadly conical, apical joint nearly as long as the two 

 preceding, nearly sti'aight inwardly liut ampliate in the middle 

 •outwardly and rounded at the tip ; maxillae moderately long, 



