1900.] Catalogue of the Coleoptcra of South Africa. 533 



intervals and occasionally the ninth also are convex ; pygidium 

 feebly aciculate, very little convex near the apex on the male, the 

 rest as in H. contractus. 



Length 14^18 mm. ; width 9-10 mm. 



Hab. Transvaal (Potchefstroom, Eustenburg), Natal (Frere). 



This species is easily distinguished from H. contractiis by the much 

 more deeply punctate dorsal striation of the elytra, as well as by the 

 quite opaque colour. The genital armature is, however, very similar 

 to that of H. contractus, but the forceps are longer and not similarly 

 compressed outwardly. 



Gen. OESILOCHUS, Burm., 



Handb. d. Entom., v., p. 112. 



Lacord. Gener. d. Coleopt., iii., p. 417. 



"Mentum elongate and acuminate at tip; maxillae with the apical 

 lobe small and not toothed ; palpi moderately robust, second joint of 

 maxillary strongly swollen at tip ; mandibles projecting beyond the 

 clypeus, truncate at tip, concave above ; head oblique, plane, clypeus 

 narrowed and obtuse in front, divided from the frontal part by a 

 bi-tuberculate carina ; antennas ten-jointed ; prothorax transverse, as 

 broad as the elytra at base in the male, broadly and deeply excavate 

 in the anterior part, and wdth a small horn on the anterior margni ; 

 that of the female a little narrowed behind, not excavate, but with a 

 small tubercle in the anterior part ; elytra short ; legs very robust, 

 bicarinate across on the upper side ; external claw of anterior tarsi 

 thickened in the male; presternum with a strong post-coxal process; 

 no stridulating striae." 



I have not been able to procure the insect included by Burmeister 

 in this genus, but Lacordaire has given a good figure of it. 



Oesilochus cobnutus, Thunb., 

 Mem. de I'Acad. Imper. de St. Petersb., vi., p. 398.; Lacord., Gener. 

 d. Coleopt. Atlas, pi. xxxvi., figs. 3, 3a, 36, Burm., loc. cit., p. 113. 



Syrichthus sjjurius, Bohem. Insect. Caffr., ii., p. 68. 



" Black, brown above, but little shining, surface of head coarsely 

 punctate, and with two tubercles on the frontal suture, the terminal 

 with a margin somewhat bent upwards ; prothorax in the male 

 rugose in the excavation, strongly punctate on the corners, as broad 

 as the elytra, strongly convex, gibbose with the shoulder angles 



