1904. | Catalogue of the Coleoptera of South Africa. 47 
club in the male, and also in having the anterior tibie plainly 
bi-dentate. 
Length 7-94 mm. ; width 64 mm. 
Hab. Southern Rhodesia (Sebakwe, Salisbury). 
TROCHALUS RUBRICATUS, Bohem., 
Plate XLVL., fig. 27. 
Ofv. Vet. Ak. Férh., 1860, p. 116. 
Reddish, opaque, faintly metallic, more sericeous on the upper 
part than iridescent, antenne 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 antennz 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 
strize are also hardly distinct ; the tibiz are bi-dentate, and the hind 
tibia 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 7. 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 74-84 mm. ; width 5-6 mm. 
Hab. Natal (Durban, Zululand); Boheman records it from the 
Lake N’Gami region. 
TROCHALUS BYRRHINUS, Fahr., 
Insect. Caffr., i1., 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; antenne flavescent; clypeus with 
the median anterior margin plainly dentate or not and the outer 
angles sharp but not reflexed 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 tibiz strongly ampliated 
