Descriptive Catalogue of the Coleoptem of South Africa. 251 
Cyaneolytta pectoralis, Gerst., 
Plate XXII., figs. 13, 13^^, ISb ( $ ). 
Monatsb. Akad. Wissens., 1854, p. 695. 
Peter's Eeis., 1862, p. 296. 
Deep dark blue, turning to lighter cyaneous on the vertical part of the 
head, and occasionally with a slight greenish tinge on the elytra ; the 
antennae and tarsi are also dark blue ; head and prothorax glabrous, but 
not so the epistome and the labrum ; the head is covered all over with 
deep, irregular, nearly confluent punctures, in the centre of the vertex 
is a fine, somewhat indistinct line which disappears towards the frontal 
part ; prothorax one-fourth longer than broad, sub-cylindrical from the 
base to two-thirds of the length, attenuate thence to the apex which is 
distinctly marginate transversely, the margin being pubescent, the base 
is straight, slightly marginate ; in the centre is a basal impression variable 
in length, and through which runs a fine impressed line which either 
reaches the apex or not, the whole surface is covered with closely set, 
deep, nearly confluent coarse punctures, leaving, however, a smooth trans- 
verse area along the outer base, above this smooth area there is occasionally 
a faint impression on each side ; scutellum briefly pubescent : elytra 
scrobiculate shagreened, extremely briefly pubescent, the pubescence 
black, the three dorsal costse are strongly raised and reach from the base 
to nearly the apex, in addition to these there is a short one divaricating on 
each side from the inner dorsal near the base and running for about one- 
sixth of the length ; under side and legs closely aciculate punctate, 
glabrous except the legs ; central part of metasternum with a broadly 
triangular red patch. In the male the basal joint of the anterior tarsi is 
dilated inwardly into a sub-rectangular process hollowed laterally and filled 
with a spongy flavous pubescence ; the intermediate and hind legs are 
normal in both sexes, but the inner spur of the posterior tibiae is filiform, 
whitish and more than half the length of the very long basal tarsal joint. 
It is singular that this character should have escaped the notice of both 
Hagg-Eutenberg and Maklin. 
Length 20-30 mm. ; width 5|-7 mm. 
This so-called species is so very closely related to C. granulipennis, 
Cast., from Upper Senegal, that I doubt if it is more than a mere varietal 
form. In the males of both, the distinctive external sexual characters are 
the same, and the shape of the genital armature is alike ; in both sexes 
the peculiar filiform shape of the inner spur of the posterior tibiae is also 
absolutely identical. The sculpture of the prothorax is less closely set in 
the Senegal examples than in C. pectoralis, and the elytra are slightly 
more rugosely punctate shagreened. I am indebted for a co-type of 
0. pectoralis to Professor H. J. Kolbe, of the Berlin Museum. 
