ANTHICUS. O57 
long as broad, rounded at the sides behind, with a few very widely scattered minute punctures; the eyes 
black, large, moderately prominent; antennz submoniliform, short, about reaching the base of the pro- 
thorax, the apical three joints distinctly wider than the preceding, the tenth transverse, joints 1-3 and 
10 and 11 testaceous, the others piceous-brown; prothorax longer than broad, narrower than the head, 
rounded at the sides before and strongly constricted behind the middle, the anterior portion transversely 
convex, the posterior portion subcylindrical, the base distinctly margined, the flanks deeply excavated, the 
surface punctured like that of the head; elytra moderately long, a little narrowed in front, somewhat 
obliquely narrowing behind, transversely flattened anteriorly and rather convex beyond, without post- 
basal depression, the humeri obtuse, the surface with a few widely scattered minute punctures, almost 
smooth ; legs testaceous, the tibie slightly infuscate. 
Length 12 millim. 
Hab. Mexico, Cordova, (Sal/é). 
One example, apparently a male. Narrower and smaller than A. concolor; the 
elytra more ovate and with less prominent shoulders; the antenne differently coloured, 
much shorter and more moniliform, and with the apical three joints distinctly widened, 
the tenth being transverse (instead of longer than broad) and the eleventh shorter. 
Very much smaller than A. invalidus, La Ferté, the elytra not coarsely punctured 
towards the base, the antenne much shorter, &c. 
24, Anthicus isthmicus. (Tab. X. fig. 16.) 
Moderately elongate, reddish-testaceous or ferruginous, very shining ; the elytra with a broad yellowish trans- 
verse median fascia, the fascia preceded and followed and sometimes interrupted at the suture by an 
indeterminate piceous-brown cloud; the upper surface clothed with fine, scattered, long, erect yellowish 
hairs, those on the elytra serially arranged. Head about as long as broad, rounded at the sides behind, 
with a few widely scattered fine punctures, the eyes black and rather prominent ; antenne moderately 
long, very little thickened outwardly, piceous, the basal joint (and sometimes the second also) testaceous, 
the apical two or three joints flavous, the eleventh acuminate; prothorax longer than broad, narrower 
than the head, rounded at the sides before and strongly constricted behind the middle, the anterior portion 
transversely convex, the posterior portion subcylindrical, slightly dilated at the base externally, the flanks 
deeply excavated, the base finely margined, the surface punctured like that of the head; elytra short, 
ovate, regularly convex, without trace of a post-basal depression, the sides compressed just below the 
shoulders, the base subtruncate, the apex broadly rounded, the humeri obtuse but distinct, the basal third 
with very distinct serially arranged punctures, the rest of the surface almost smooth; legs testaceous, the 
basal two-thirds of the tibize piceous or infuscate, the femora slender; fifth ventral segment truncate at 
the apex in the male. 
Length 137-2 millim. (¢ 9.) 
Hab. Panama, Bugaba, Volcan de Chiriqui (Champion). 
Numerous examples. In its ovate elytra without trace of post-basal depression, this 
curious little species approaches the genus Mormicomus, but it seems to be best; placed 
in Anthicus. The general shape is somewhat that of A. clavicornis, &c. 
25. Anthicus spinicollis. (Tab. X. fig. 17.) 
Anthicus (Acanthinus) spinicollis, La Ferté, Monogr. Anthic. p. 138, t. 27. fig..217. 
Anthicus nigrosignatus, Deyr. in litt. 
Hab. Mexico (coll. Oberthir), Colima city, Vera Cruz, Frontera in Tabasco (Hége), 
