AMBATES. 163 
16. Ambates czecus. (Tab. IX. fig. 28, 2.) 
Embates cecus, Chevr. Col. Mex. cent. i. fase. 1, no. 17 (1833) *. 
Ambates cesus (sic), Schinh. Gen. Cure. vii. 2, p. 153°. 
Hab. Mexico? (ex coll. Flohr), Toxpam and Santacomapan (Sallé), Playa Vicente 
(Hoge), Orizaba 1. 
Apparently a common insect in the State of Vera Cruz. It is more elongate than the 
allied forms with a large, velvety-black, ochreous- or white-edged spot on each elytron ; 
the prothorax is very little narrower than the elytra, and has, at most, a faint ochreous 
line on each side of the disc; the elytra are here and there flecked with white around 
the seriate punctures, and the black spot is more or less pointed near the suture behind. 
The male has the first two ventral segments broadly depressed down the middle, 
17. Ambates ocellatus, sp.n. (Tab. IX. fig. 29, ¢.) 
Ambates ocellatus, Jekel, in litt. 
Moderately elongate, dull, black ; the prothorax with a sharply-defined, whitish line on each side, extending 
forward on to the head and rostrum, the elytra each with an oblique, transverse, subangular, velvety- 
black, ochreous-edged patch on the disc (extending from the first to the sixth stria) midway between the 
base and apex; the rest of the vestiture of the upper surface sparser, brownish or ochreous (with a rosy 
flush in one specimen), that of the under surface yellowish-white. Rostrum arcuate, very stout, rugosely 
punctate and tricarinate. Prothorax broader than long, rounded at the sides, constricted and much 
narrowed in front, the sides subparallel at the base ; densely, rugulosely punctate. Elytra much wider 
than the prothorax, elongate-triangular, the subapical callosities prominent ; finely punctate-striate, the 
interstices flat, rugulosely punctulate, finely granulate at the base, 9 throughout, and 5 and 7 at their 
point of termination, narrowly costate. Femoral tooth large. Ventral segments 1 and 2 very deeply 
sulcate, and 5 with a small tuft of ochreous hairs in the middle, and the posterior tibie strongly ciliate 
on the inner side from the middle to the apex, in the ¢. 
Length 53-63, breadth 2;5-23 millim. (¢ @.) 
Hab. Mexico (Mus. Brit.: 2), Teapa (H. H. Smith: ¢). 
Two males and one female, one only in good condition. More elongate than 
A. bisignatus, the dense pallid submarginal line on the prothorax sharply defined, the 
elytral striz more finely punctate, the subapical callosities prominent, the ventral 
depression of the male very deep and sulciform, the posterior tibize (as in A. poly- 
morphus) ciliate within in this sex. 
18. Ambates nigronotatus, sp.n. (Tab. IX. fig. 30, ¢.) 
Elongate, opaque, black, the antenne (the club excepted) ferruginous; the prothorax with a whitish vitta on 
each side, the elytra each with a very large, oblique, dense, brownish-black patch—bordered in front 
and behind with whitish scales—on the disc beyond the middle; the rest of the vestiture of the upper 
surface brown, intermixed with whitish or ochreous, that of the under surface paler. Rostrum very 
stout, arcuate, rugosely punctate and carinate. Prothorax broader than long, densely, rugulosely 
punctate. Elytralong, much wider than the prothorax, the interstices flat, rugulosely punctate. Ventral 
segments 1 and 2 with a broad, smoother, excavation down the middle. 
Length 52, breadth 2 millim. (<¢.) 
Hab. Guatemata, Zapote (Champion). 
YY 2 
