162 RHYNCHOPHORA. 
Prothorax a little broader than long, rounded at the sides; densely, finely, rugulosely punctate. lytra 
long, finely punctate-striate, the interstices flat and densely punctulate. Ventral segments 1 and 2 
broadly depressed down the middle in the ¢. 
Length 44-51, breadth 14-2 millim. (¢ @.) 
Hab. Panama, Bugaba, Volcan de Chiriqui (Champion). 
Three specimens. Distinguishable by the large triangular black patch between the 
broad, sinuous, anteriorly constricted or interrupted, ochreous vitte of the elytra; 
the elytra also with a short black streak at the sides towards the apex, as in 
A. tetrastigma. 
14. Ambates tetrastigma, sp.n. (Tab. IX. figg. 26, 26a, 2.) 
Elongate, opaque, piceous, the apex of the rostrum, femora (except at the tip), and tibize ferruginous; thickly 
clothed with pale yellowish scales, the prothorax with a darker more sparsely squamose space down the 
middle and another on each flank, the elytra with an oblique pyriform spot near the suture at about the 
middle, and a short streak exterior to the subapical callosity, black ; the vestiture of the under surface 
close at the sides and sparse down the middle. Head shallowly foveate between the eyes; rostrum 
strongly arcuate, stout, densely, rugosely punctate and carinate, smoother at the tip; joint 2 of the 
funiculus fully as long as 1. Prothorax nearly as long as broad, densely, finely punctate. LElytra long, 
obsoletely punctate-striate, the stria becoming distinct towards the suture, sides, and base, the interstices 
flat and densely, rugulosely punctulate. 
Length 54, breadth 2 millim. (2.) 
Hab. Panama, Bugaba (Champion). 
One specimen. Easily known by the close pallid vestiture, the two black marks on 
each elytron (the one near the suture oblique and pear-shaped), and the partially 
obliterated striz. 
15. Ambates melanops, sp. n. (Tab. IX. fig. 27, ¢.) 
Elongate, shining, black; thickly clothed with minute cinereous or brownish, hair-like scales, the seriate 
punctures of the elytra flecked with white, the elytra each with a large, oblique, oval, velvety-black 
patch on the disc beyond the middle, bordered posteriorly with white scales ; the vestiture of the under 
surface and legs (the ochreous soles of the tarsi excepted) also white, the ventral segments 3 and 4 (and 
the depressed portion of 1 in the ¢) almost bare. Rostrum stout, arcuate, rugulosely punctate and feebly 
carinate, sparsely punctate at the tip, the apical portion smoother in the 2. Prothorax transverse 
rounded at the sides anteriorly, narrowed and constricted in front; densely, finely, confluently pineal 
Elytra elongate-triangular, flattened on the disc anteriorly ; with rows of somewhat widely separated 
punctures placed in fine shallow striw, the interstices flat and closely punctulate. Ventral segments 
1 and 2 broadly depressed down the middle, and the posterior tibiee with a dense fringe of ochreous hairs 
along their inner edge from the middle to the apex, in the ¢. 
Length 52-83, breadth 2;/)-3g millim. (¢ 9.) 
Hab. Panama, Bugaba, Volcan de Chiriqui (Champion). 
Found in abundance in Chiriqui. Near A. cwcus, and with a similar large velvety- 
black patch on each elytron beyond the middle (which is not, however, surrounded by 
a dense ochreous line), the upper surface shining, the elytra less parallel, the posterior 
tibie strongly ciliate in the male. The antenne are inserted beyond the middle of 
the rostrum in both sexes. 
