' 1904.] Catalogue of the Coleoptera of South Africa. 47 



club in the male, and also in having the anterior tibiae plainly 

 bi-dentate. 



Length 7-9 J mm. ; width 6f mm. 



Hah. Southern Ehodesia (Sebakwe, Salisbury). 



Trochalus rubricatus, Bohem., 



Plate XLVL, fig. 27. 

 Ofv. Vet. Ak. Forh., 1860, p. 116. 



Eeddish, opaque, faintly metallic, more sericeous on the upper 

 part than iridescent, antennae flavescent, the club very long in the 

 male ; more ampliate laterally in the posterior part than any of 

 the preceding species, it is also distinguished by the very long club 

 of the antennae in the male, the more bluntly tri-dentate clypeus, 

 the very finely punctulate prothorax as well as the aciculate elytra, the 

 aciculation being almost hidden by the sub-opaque indumentum, the 

 striae are also hardly distinct ; the tibiae are bi-dentate, and the hind 

 tibiae more broadly dilated inwardly ; the figure of the genital 

 armature is not quite correct, owing to the right forceps being more 

 twisted than in the original. There is, however, a great similarity in 

 these organs in T. mashunus, exasperans, and rubricatus, showing 

 that these three species are closely allied ; it is more closely allied to 

 T. exasperans, but the punctuation is different. 



Length 7^—8^- mm. ; width 5-6 mm. 



Hah. Natal (Durban, Zululand) ; Boheman records it from the 

 Lake N' Garni region. 



Trochalus byrrhinus, Fahr., 

 Insect. Caffr., ii., p. 129. 



? T. atratus, Burm., Handb. d. Entomol., iv., 2, 1885, p. 161. 



Sub-spherical, short, plainly convex in the anterior part of the 

 elytra, dark bronze, opaque ; antennae flavescent ; clypeus with 

 the median anterior margin plainly dentate or not and the outer 

 angles sharp but not renexed in the male, it has a long longitudinal 

 keel reaching nearly from the frontal transverse one to the anterior 

 depression, and the punctuation is deep and moderately closely set ; 

 prothorax short, more than twice broader than long, and very closely 

 and finely punctate ; prothorax triangular, as broad at the base as 

 long ; elytra plainly ampliated, faintly striate in the dorsal part, and 

 with the punctures hardly visible in well-preserved specimens, not 

 deep, and somewhat scattered in rubbed examples ; under side with 

 the normal sculpture and vestiture, posterior tibiae strongly ampliated 



