1897.] 



of the Coleoptera of South Africa. 



109 



d'Entomologie,' 1887, p. 28, refers to this species and not to T. collaris 

 proper ; I deem it advisable therefore to give a comparative descrip- 

 tion of the two species. 



T. collaris. 

 Head longer, slightly narrowed 

 before the antennal tubercle, 

 which is but little dilated, foveae 

 between the eyes smaller than in 

 mgicollis. 



Canthus under the eye pro- 

 duced in a long and sharp spine. 



Last joint of maxillary palpi 

 narrowly produced outwardly at 

 apex, long, and very acuminate. 



Male : Last joint of antennae 

 with only one large depression at 

 base, ending at tip in a single, 

 more or less compressed tooth. 



Second and third ventral seg- 

 ments very slightly impressed. 



Length 2-40-2-60 mm. 



Hab. Island of Zanzibar, and 

 on the mainland, Bagamoyo and 

 Mikindani. 



T. rugicollis. 

 Head shorter, much narrowed 

 before the antennal tubercle, 

 which is much more dilated ; 

 foveae between the eyes larger and 

 much more transverse, separated 

 from each other by a carinule. 



Canthus under the eye short 

 and obtuse. 



Last joint of maxillary palpi 

 roundly dilated outwardly, apical 

 part short, acuminate. 



Male : Last joint of antennae 

 with two transverse and com- 

 pressed teeth, or small carinae, 

 the interval between them filled 

 by a transverse depression. 



Second ventral segment with 

 a strong impression, third one 

 with two small tubercles at base. 



Length 2-50-2-60 mm. 



Hab. Natal (Frere), Zanzibar 

 mainland (Lindi). 



Gen. PSELAPHOCEBUS, Eaffr., 

 Eev. Entom., vi., 1887, p. 28. 



Thick, convex, attenuate in front ; head with a broad, robust 

 antennal tubercle ; antennae strongly and irregularly clavate, first 

 joint subelongate, cylindrical, smaller than the following ones ; palpi 

 strong, first joint inconspicuous, second rather elongate, slender at 

 base, much dilated in a triangular form, third triangular, more or 

 less dilated outwardly either obtusely or in an apophyse, fourth more 

 or less transversely triangular, and acuminate inwardly at tip ; 

 prothorax longer than broad, narrowed in front and foveate laterally; 

 elytra large, convex, attenuate at base, ampliate behind, discoidal 

 stria short ; abdomen large, marginate, first dorsal segment hardly 

 longer than the others ; metasternum long, slightly raised ; posterior 



