472 Transactions South African Pliilosopliical Society, [vol. xii. 



dilated towards the apex, straight inwardly, strongly serrate ex- 

 ternally from the joint to the apex, where the two apical teeth are 

 more developed than the serrate ones, obliquely, truncate at apex 

 and with a distinct apical spur in the outer angle, tarsi moderately 

 robust, short, conical, claws small, median and posterior tibiae 

 broadly dilated but hollowed internally, very sharply carinate and 

 closely serrate on the upper and outer side, the posterior ones are 

 sub-arcuate at tip with the outer angle quadrate and projecting. 



The insect included in this new genus, which is allied to Acantho- 

 cerus, is also able to partially roll itself up. It differs from 

 Acanthocerits in the shape of the head, the non-emarginate eyes, 

 the shape of the intermediate joints of the antennte, and also in 

 having a comparatively short scutellum. 



ACAXTHOCEEODES SINGULAEIS, 



Plate XXXIX., fig. 23. 



Black, shining ; legs and tarsi piceous ; club of antennge some- 

 what rufescent ; head covered with deep, nearly contiguous, round 

 punctures, gense very small and without trace of suture, clypeus 

 attenuate sub-triangularly from the gen®, but a little rounded at 

 apex, near the central part of the head there is a sub-elongate, longi- 

 tudinal tubercle ; prothorax moderately convex, grooved all round, 

 a little ampliate diagonally from the anterior angles towards the base 

 and not angular there, with the basal part arcuate and covered all 

 over with fine, deep, contiguous punctures ; scutellum moderately 

 long, sharply triangular ; elytra globose, and having on each side ten 

 stri£e, the outer margin is sharply carinate ; the intervals are plane 

 except in the posterior part where the fourth, seventh, and tenth are 

 very distinctly carinate and are filled with seriate shallow fovese sub- 

 granulose in the anterior part ; under side and legs very rugose and 

 very briefly pilose. 



Length 5| mm. ; width 3 mm. 



Hab. Cape Colony (Kowie), occurs also in Natal. 



Sub-Family CHIKONIN^. 



Mandibles greatly developed, reflexed, not covered by the labrum, 

 the latter sometimes quadri-dentate, each labial palpiger developed 

 into a transverse lobe not quite meeting above the mentum ; antennae 



