AMBATES., 165 
21. Ambates bisignatus. (Tab. IX. figg. 33, 334, ¢ .) 
Ambates bisignatus, Chevr. Ann. Sov. Ent. Fr. 1877 > p. 3417. 
Hab. Mexico}, Toxpam, Cordova, San Andres Tuxtla (Sallé), Teapa (H. #7. 
Smith). 
Sent us in some numbers from Teapa. In this insect the subangular velvety-black 
spot on each elytron is placed near the suture midway between the base and apex, and 
bordered behind with ochreous or whitish scales; the elytra themselves are much 
wider than the prothorax, elongate-triangular, finely striate, the striae impressed with 
oblong punctures; the prothoracic vitte are sharply defined; the prosternum is densely 
clothed with ochreous scales in front of the anterior coxe; the rostrum is exceedingly 
stout, rugosely punctate and carinate to the tip. The broad ventral depression of the 
male is very shallow. 
22, Ambates duplicatus, sp. n. (Tab. IX. fig. 34, 2.) 
Moderately elongate, opaque, rufo-piceous, the tibia, tarsi, and antenne (the club excepted) ferruginous ; the 
prothorax with a sinuous line on each side of the disc, extending forward on to the head, and another 
down the middle, ochreous, the elytra each with a large, oblong-quadrate, velvety-black patch at the 
middle of the disc, followed by a transverse yellow spot, the seriate punctures here and there surrounded 
by pallid scales; the rest of the vestiture of the upper surface sparser, brownish or ochreous, that of the 
under surface whitish, ochreous in front of the anterior coxe. Rostrum arcuate, very stout, rugosely 
punctate and tricarinate. Prothorax transverse, rounded at the sides, constricted and much narrowed 
in front; densely, rugulosely punctate and feebly carinate. Elytra about one-half wider than the 
prothorax, flattened, triangular, the humeri and subapical callosities prominent ; rather deeply punctate- 
striate, the interstices flat and densely rugulose. Ventral segments shining, with a broad, sparsely 
punctate, almost bare space down the middle. 
Length 6, breadth 24 millim. (9.) 
_ Hab, Muxico, Cerro de Plumas (Hoge). 
One specimen. Larger and broader than A. bisignatus, the black spots larger, 
oblong-subquadrate, and each followed by a transverse yellow patch, the prothorax 
more rounded at the sides and with a fine, sinuous, ochreous line on each side of 
the disc. 
23. Ambates exclamationis, sp.n. (Tab. X. figg. 1, 1a, 2.) 
Moderately elongate, opaque, nigro-piceous, the antenne and tarsi ferruginous; clothed above with small 
dark brown and fulvous scales, the prothorax with an oblique, sharply-defined, whitish line on each side 
of the disc; the elytra each with an elongate, velvety-black, somewhat !-shaped mark on the disc beyond 
the middle, and a white spot enclosed in the lower portion of this mark and another slightly anterior to 
it on the outer margin; the vestiture of the under surface and legs sparse, in part whitish, the prosternum 
with a denser white patch in front. Rostrum exceedingly stout, arcuate, rugulosely punctate and finely 
carinate, Prothorax broader than long, abruptly narrowed and constricted in front ; densely, rugulosely 
punctate. lytra oblong-triangular, much wider than the prothorax; finely punctate-striate, the 
interstices flat and rugulosely punctate. Ventral segment 1 depressed down the middle in the 3. 
Length 34-4, breadth 14-13 millim. (¢ @.) 
Hab. Guatemaa, Zapote, Pacific slope (Champion). 
