AMBATES, 167 
A common insect in Central America, and found, according to Prof. Biolley, on a 
species of Solanum. The variety (three specimens from Chiriqui) is connected by 
intermediate forms. The elongate, velvety-black patch on each elytron (occupying 
the median third or more of their total length), the exceedingly stout, compressed 
rostrum, &c., distinguish this species, which is closely related to A. bisignatus. 
26. Ambates ornativentris, sp.n. (Tab. X. fige. 5, 5a, 9 .) 
Oblong, broad, opaque, black; the elytra each with a large, elongate, irregular, velvety, black or dark brown, 
patch on the dise—extending from about the basal third to near the apex, and interrupted posteriorly,— 
edged here and there or on all sides with paler scales; the rest of the vestiture of the upper surface 
sparser, brownish or fulvous; the entire flanks of the prothorax, the prosternum, the mesosternum and 
side-pieces, the four anterior coxe, and a broad patch at the middle of the basal half of the abdomen, 
densely clothed with white scales, the vestiture of the metasternum, the rest of the abdomen, and the 
legs in great part fulvous. Rostrum very stout, strongly arcuate, rugosely punctate and carinate. 
Prothorax transverse, rounded at the sides anteriorly, constricted and narrowed in front; densely, 
rugulosely punctate, obsoletely carinate anteriorly. lytra broad, subtriangular, the humeri and 
subapical callosities prominent; finely punctate-striate, the interstices densely rugulose. Ventral 
segments 1 and 2 broadly and shallowly depressed down the middle in the ¢. 
Length 53-63, breadth 23-3 millim. (¢ 9.) 
Hab. Mexico, Toxpam (Sallé), Cerro de Plumas (Hoge); GuatTEMALa, Zapote 
(Champion). : 
Ten specimens, all but one from Mexico. Broader than A. solani, the elytra with 
an irregular spot beyond the elongate patch on the disc, the entire under surface of 
the prothorax, the mesosternum, and a large patch on the first two segments of the 
abdomen, densely clothed with white scales. 
27. Ambates scutiger, sp.n. (Tab. X. figg. 6, 6a, 2.) 
Elongate, opaque, nigro-piceous, the antenne (the club excepted), tarsi, and apices of the tibie ferruginous ; 
the prothorax with a median line and a vitta on each side, and the head and rostrum, clothed with minute, 
hair-like, flavo-cinereous scales ; the elytra with a large, common, triangular, anteriorly evanescent, velvety, 
brownish-black patch at the middle of the disc; the rest of the vestiture sparse, flavo-cinereous, that of 
the under surface and legs coarser, whitish, dense on the prosternum and along the lower part of the 
flanks of the prothorax. Rostrum very stout, strongly arcuate, abruptly depressed at the base and 
flattened towards the apex, rugulosely punctate and carinate, smooth at the tip. Antennal club very 
large, ovate. Prothorax about as long as broad, narrowed and constricted in front, the sides parallel at 
the base ; densely, rugulosely punctate. Elytra elongate, flattened on the anterior portion of the disc, the 
subapical callosities prominent ; finely punctate-striate, the interstices densely rugulose. Beneath closely 
punctate. 
Length 532, breadth 24 millim. ( 9.) 
Hab. GUATEMALA, Sinanja in Vera Paz (Champion). 
One specimen. The velvety brownish-black patch on the elytra in this species is 
shaped very much as in A. circumductus, but the continuous ochreous line exterior to 
it is wanting, the lower part of the flanks of the prothorax is densely albo-squamose, 
the rostrum is abruptly depressed at the base and bent downwards towards the tip, the 
antennal club is larger, and the insect itself is much more elongate, 
