244. [April, 
NOTES ON CARABIDZ, AND DESCRIPTIONS OF NEW SPECIES (No. 2). 
BW VE. We eB AERIS) eh eZi 8) 
Trrrcus Hamriront, n. sp.—Z. Megerlei dimidio minor, niger, an- 
tennis brevibus thoracis basin paulo superantibus ; thorace lato, pone medium 
rotundato-dilatato nequaquam angulato, lateribus pone dilatationem haud 
sinuatis, supra plano, grosse confluenter punctato, marginibus haud reflexrs ; 
elytris sub-oblongo-ovalibus, apice abrupte declivibus, obtuse rotundatis, supra 
costis alternatim paulo angustioribus ; corpore subtus leevi. 
Long. 1 in. 4 lin. Lat. thoracis 4 lin. 2 exempl. 9. 
Distinguished from all other known species by the broadly rounded 
sides of the thorax, the short antenne, and the somewhat oblong-oval 
form of the elytra. The width of the thorax is exactly 4 lines, whilst 
its length in the middle is only 33 lines ; and its sculpture differs from 
other species in consisting of very large rounded punctures, confluent 
chiefly in a longitudinal direction, and leaving elongated, irregular, 
smooth interstices. The elytra are much fuller at the shoulders than- 
in any other species, and their extreme apex is not flattened out as in 
T. Megerlei ; the alternately narrower cost reach very nearly to the 
base, and the sculpture of the interstices consists in very regular trans- 
verse carinz, only slightly tuberculated in the middle. In size this 
species does not differ from 7. carinatus, Klug, so beautifully figured 
(under the synonym of 7. TPhomsonii) in the French ‘Annales,’ 1856, t. 
8, f. 2, but the sides of the thorax in that species form very distinct 
angles, and the elytra are narrowed off at the shoulders. In the form 
and sculpture of the elytra 72. Hamiltonii very much resembles 7. 
violaceus, Klug, which differs in its elongate thorax, in colour, and — 
in the punctured episterna of the prothorax. 
This interesting new species was discoverd by Charles Hamilton, | 
Esq., author of the “Sketches of Life and Sport in South-Eastern | 
Africa,” on his recent journey in Angola, About 10 specimens were | 
found, all agreeing in their specific characters. I am indebted for the | 
pair in my collection to this adventurous traveller, and to his friend 
F. G. H. Price, Esq. A male in Mr. Janson’s collection differs only in: 
the thorax being slightly narrower, and the elytra less full at the’ 
shoulders. | 
Genus Prrtcompsus, Leconte. 
Schaum, in his volume of the “ Insecten Deutschlands,” and in the 
“ Berliner Entom. Zeitschrift,’ 1860, p. 201, admits Pericompsus as a 
vy natural group of Tachys, distinguished by its convex elongate-oval 
of body, six elytral striw, besides the marginal one, which is deep 
