54 RHYNCHOPHORA. 
received, it is very variable in size and colour, and in the form of the process on the 
first joint of the antenna. 
2. Rhaphirhynchus amplicollis. 
Rhaphidorrhynchus amplicollis, Senna, Ann. Soc. Ent. Belg. 1894, p. 597". 
Hab. Mexico1.—Sourn America, Cayenne 4, Fonteboa'. 
We have not received a specimen of this species, which is described as allied to 
R. sexvittatus. I do not know on what evidence Mexico is given as one of the 
localities. 
8. Rhaphirhynchus filicornis, sp. n. (Tab. II. fig. 17.) 
3. Gracillimus, niger, opacus, prothorace medio rufescente; capite posterius angustato et rotundato, subtus 
foveolis duodecim munito ; elytris lineis flavis ornatis, apice truncato, utrinque brevissime denticulato. 
3 ely ’ ’ q 
Long. 8 millim. 
Hab. Panama, Bugaba (Chainpion). 
We have received a single example only of this species, which is one of the most 
distinct and elegant forms of the genus. The prorostrum is only very minutely granulate 
on the upper surface. ‘The minute mandibles are exposed at the tip of the rostrum, and 
surround a free space. The metarostrum is elongate, deeply sulcate, the vertex striate- 
rugose. ‘The antenne are very long and slender. ‘The thorax is long and slender, and 
has the surface dull; there is no channel, but the colour along the middle is obscurely 
rufescent. The elytra are narrow, dull black, with linear amber-like marks disposed 
as follows :—the third interstice with a short line at the base and a similar one beyond 
the middle; the fourth interstice with a very elongate line on the middle, overlapping 
the widely separated extremities of the lines on the third interstice ; a short line on the 
seventh interstice in front of the apical declivity; and on the eighth interstice an 
elongate line. The head and metarostrum beneath have on each side six very large 
punctures serially placed; the rest of the under surface is black, shining, impunctate. 
The legs are remarkably slender. 
4, Rhaphirhynchus longulus, sp. n. (Tab. IL. figg. 18; 184, portion of the 
sculpture of the elytra.) 
Elongatus, angustus, niger, opacus; elytris interstitiis tribus flavo-lineatis, juxta suturam sulco unico im- 
punctato, externe seriatim fortiter punctatis, interstitiis subcarinatis. 
Long. 11-18 millim. 
Hab. Nicaragua, Chontales (Belt, Janson); Panama, Bugaba (Champion). 
This species is remarkable from its elongate parallel form and deep black colour, 
dull above, shining on the under surface. ‘The sculpture of the elytra is peculiar: the 
