ANTHICUS. 225 
Hab. Muxtco, Teapa (coll. Oberthiir); GuarumaLa, Paso Antonio (Champion) ; 
Nicaragua, Chontales (Janson); Panama, Volcan de Chiriqui 3000 feet (Champion). 
Ten examples. Closely allied to A. albicinctus, from which it may be at once 
separated by the prominent conical elevation on either side of the base of the elytra 
(this is very distinct when the elytra are viewed from behind or from the side). The 
head is less transverse; the transverse groove of the thorax is shallower (the narrow 
basal portion appearing less raised); and the elytra sometimes have irregular rows of 
fine shallow scattered punctures towards the base. The male, as in the same sex of 
A. albicinctus, has the fifth ventral segment emarginate. 
A. vinculatus, La Ferté, from Cumana, has the elytra somewhat similarly tuberculate 
at the base; this species, however, has a very differently shaped thorax. 
3. Anthicus clavicornis. (Tab. X. figg. 3; 3a, profile.) 
Moderately elongate, black or brownish-black, the head or the head and prothorax sometimes pitchy-red, the 
elytra each with a transverse flavous fascia below the base (occupying the basal depression, and sometimes 
nearly extending to the suture and to the lateral margin); the upper surface very shining and with a few 
fine widely scattered erect hairs. Head as long as or longer than broad, convex, rounded at the sides 
behind, very sparsely and finely punctured and clothed with fine longitudinally arranged appressed pubes- 
cence, the eyes very prominent, the palpi varying in colour from piceous-brown to fusco-testaceous ; 
antenne distinctly clavate, the apical three joints considerably widened, joints 1-3 or 1-4 flavo-testaceous, 
the rest black ; prothorax a little longer than broad, narrower than the head, strongly gibbous anteriorly, 
the sides rounded before and deeply constricted behind the middle and thence to the base straight (in some 
specimens one or two very short teeth are visible at the broadest part, and the sides in these appear to: be 
more angularly dilated), the flanks with a short but deep excavation, the base finely margined, the disc 
(viewed laterally) cylindrical and uninterrupted behind and abruptly declivous in front, the surface very 
finely and very sparsely punctured ; elytra rather short, rounded at the sides about the middle and 
narrowing in front, obtuse behind, with a deep transverse: post-basal depression and convex or almost 
gibbous behind this, the basal portion slightly swollen, the humeri prominent, the surface distinctly 
striate-punctate to about one-third from the base and thence to the apex obsoletely so or almost smooth ; 
legs piceous, the femora usually paler at the base, the tarsi flavous, the femora distinctly clavate; fifth 
ventral segment broadly and shallowly emarginate in the male. 
Length 13-27 millim. (¢ @.) 
Hab. Mexico, Atoyac in Vera Cruz, Teapa in Tabasco (H. H. Smith); Brutisu 
Hownpvuras, Belize (Blancaneaus) ; GuATEMALA, Rio Naranjo, Zapote, Chacoj (Cham- 
pion). 
Nine examples. This insect inhabits both the Atlantic and Pacific slopes of Guate- 
mala, extending along the Atlantic slope northwards to S. Mexico. It has much the 
facies of A. albicinctus and A. bituberculatus, from either of which the very differently 
formed thorax at once distinguishes it: in A. clavicornis the disc is not interrupted 
by a transverse groove. The eyes are very prominent; the antenne are clavate; the 
thorax is strongly gibbous in front; the elytra are short and convex, and have a deep post- 
basal depression, the depression occupied by a flavous fascia, the surface striate-punctate 
towards the base. The head is partly clothed with long, fine, appressed pubescence, 
and appears at first sight to be longitudinally strigose. The thorax usually has one or 
BIOL. CENTR.-AMER., Coleopt., Vol. IV. Pt. 2, October 1890. 2GG 
