226 RHYNCHOPHORA. 
Chiriqui. The anterior tibie are stouter, more sinuate, and more sharply denticulate 
than in any of the other allied forms, and the head and rostrum are relatively 
broader. 
5. Steirarrhinus guatemaltecus, sp. n. 
Elongate, narrow (¢ ), broader (@ ), piceous or ferruginous ; uniformly clothed above and beneath with small 
green scales, and also thickly set with minute decumbent yellowish hairs. Head and rostrum as in 
S. tenuicornis; antenne not so slender, the outer joints of the funiculus relatively shorter and less abruptly 
clavate at the tip. Prothorax a little more rounded at the sides posteriorly, obsoletely canaliculate. 
Scutellum small, triangular. Elytra more elongate, subparallel to beyond the middle in ¢; deeply 
punetate-striate, the interstices convex. Legs a little stouter; anterior tibize closely denticulate, but 
without definite uncus at the tip. 
Length 63-8}, breadth 2-3 millim. (od @.) 
Hab. Guatemata, Capetillo, Cerro Zunil (Champion). 
Two males and one female, all somewhat worn, the female especially. asily 
separable from the southern S. tenuicornis by the closely denticulate anterior tibie, 
the less slender antenne, the more elongate elytra, and the uniformly squamose 
surface. 
6. Steirarrhinus tenuicornis, sp.n. (Tab. 1X. fig. 31, ¢.) 
Elongate, narrow (¢), broader (2 ), piceous or obscure ferruginous ; clothed above (a space down the middle 
of the head and prothorax, and the scutellum and suture, excepted) and beneath (a finely pilose space 
down the middle of the metasternum and abdomen excepted) with small golden- or bluish-green scales, 
the upper surface also thickly set with minute decumbent hairs. Rostrum transverse, subquadrate, 
finely punctate, narrowly sulcate down the middle from the arcuate inter-antennal ridge, the groove 
extending backward to near the base of the head. Antenne extremely slender, reaching the middle of 
the elytra, the joints of the funiculus thickened at the apex, 2 nearly two and a half times as long 
as 1, 1 and 38 equal in length, 4-7 very little shorter than 3, the club elongate. Prothorax much 
broader than long, subcylindrical, transversely grooved on the outer part of the disc towards the base ; 
finely punctate, smoother along the median line. Scutellum very small. Elytra long, subparallel in 
their basal half in ¢, widening to the middle in 9; the strie with closely placed rather coarse punctures, 
the interstices moderately convex. Legs long and slender; anterior femora strongly clavate ; anterior 
tibiee unarmed and without definite uncus at the tip. 
Length 54-74, breadth 13-24 millim. (¢ 2.) 
Hab. Panama, Volcan de Chiriqui 2000-4000 feet (Champion). 
A long series. ‘This insect has the appearance of an elongate Polydrosus and in 
life it is covered with a dense yellow mealy exudation. ‘There is an almost bare narrow 
space down the middle of the body above and a very finely pubescent, broader, non- 
squamose space beneath. ‘The antenne are long and extremely slender, the scape 
reaching beyond the anterior margin of the prothoras. 
7. Steirarrhinus cupreotinctus, sp. n. (Tab. IX. fig. 32, 3.) 
3. Elongate, narrow, piceous, the elytra fusco-ferruginous, the antenne and legs ferruginous; thickly 
clothed with coppery-white scales, intermixed with minute, decumbent, hair-like scales; the legs pilose, 
the hairs on the femora very fine and scattered. Head and rostrum narrowly sulcate, the rostrum 
