168 RHYNCHOPHORA. 
98. Ambates angustatus, sp.n. (Tab. X. fig. 7, 9.) 
Elongate, narrow, opaque, nigro-piceous, the antenne (the club excepted), tarsi, and apices of the tibie 
ferruginous ; somewhat thickly clothed with minute flavo-cinereous scales, which are condensed on the 
prothorax into an oblique vitta on each side and a faint median line and on the elytra into various 
indeterminate patches, the elytra also with an inconspicuous, common, transverse, interrupted, dark 
brown median fascia (extending outwards to the fourth stria) ; the vestiture of the under surface rather 
coarse, close, and whitish, denser on the flanks of the prothorax. Rostrum evenly arcuate, stout, longer 
than the head and prothorax, rugulosely punctate and sharply carinate, the apical third much smoother. 
Prothorax as long as broad, parallel-sided, abruptly narrowed and constricted in front; densely, 
rugulosely punctate. Elytra long, flattened on the anterior portion of the disc; very finely punctate- 
striate, the interstices flat, densely rugulose. 
Length 44, breadth 1? millim. ( 2.) 
Hab. Panama, Volcan de Chiriqui (Champion). 
One specimen. Smaller and more parallel-sided than the Guatemalan A. scutiger, 
the rostrum evenly arcuate, the elytra more finely punctate-striate, and with the 
common dark dorsal patch reduced to an interrupted transverse streak. ‘The antenne 
are inserted at the middle of the rostrum. 
29. Ambates apicalis, sp.n. (Tab. X. fig. 8, 2.) 
Moderately elongate, opaque, nigro-piccous, the antenne, apices of the tibia, and tarsi ferruginous; the 
prothorax with a sharply-defined line on each side of the disc, extending forward on to the head and 
backward on to the humeri, and the elytra with a small spot on the fifth interstice before the middle, 
and a common, narrow, transverse, subapical fascia, extending down the suture and disc to the apex, 
ochreous; the rest of the vestiture of the upper surface very sparse and fine, fuscous and ochreous, that 
of the under surface cinereous. Rostrum stout, arcuate, rugulosely punctate and subcarinate. Prothorax 
broader than long, rounded at the sides anteriorly, constricted and narrowed in front; densely, rugulosely 
punctate. Elytra long, much wider than the prothorax, subparallel in their basal half; finely punctate- 
striate, the interstices flat and rugulosely punctate. 
Length 34, breadth 13 millim. (2.) 
Hab. Panama, Bugaba (Champion). 
One specimen. Not unlike the Guatemalan A. exclamationis, but wanting the 
elongate velvety-black streak on the disc of each elytron, and with the ochreous scales 
clustered into a subapical transverse fascia and some markings at the apex, and a 
small spot on the fifth interstice before the middle. 4. buqueti, Faust, from 
Venezuela, seems to be an allied form. 
30. Ambates vitticollis. (Tab. X. fig. 9, ¢.) 
Ambates vitticollis, Jekel, in litt.; Chevr. Bull. Soc. Ent. Fr, 1879, p. cxlix’. 
Elongate, dull, black ; the prothorax with a broad vitta on each side, extending forward on to the head and 
rostrum, and a narrow median stripe, and the elytra with some irregular, coalescent markings at the 
apex, densely clothed with narrow ochreous scales, the rest of the elytral vestiture close and black, that 
of the under surface in great part fulvous at the sides and whitish down the middle to as far as the 
second ventral suture. Rostrum strongly arcuate, very stout, rather short, rugosely punctate and 
carinate, smoother at the tip. Prothorax transverse, rounded at the sides, constricted and narrowed in 
front; densely, rugulosely punctate. Elytra long, a little wider than the prothorax; very finely 
