STEITRARRHINUS. 227 
slightly hollowed down the middle to the v-shaped inter-antennal ridge; antenne very long and 
slender, reaching to about the middle of the elytra, joint 2 of the funiculus nearly two and one-half 
times the length of, and 3-7 each as long as, 1, 3-7 becoming slightly thicker outwards, the club elongate. 
Prothorax short, narrowed anteriorly, finely punctate, transversely plicate, and with a conspicuous, 
smooth, median groove. Scutellum depressed, minute. Elytra elongate, parallel in their basal half, 
regularly punctate-striate, the interstices feebly convex. Ventral segments 1 and 5 sulcate down the 
middle, the latter nearly as long as 2-4 united. Legs elongate, the femora shining, the tibie slender, 
the anterior pair unarmed, sinuous within, and without definite uncus, the first joint of the intermediate 
and posterior tarsi rather stout. 
Length 7, breadth 2} millim. 
Hab. Costa Rica? (Mus. Brit.). 
One specimen, labelled “Guat.” in the British Museum, but almost certainly from 
Costa Rica, like various other insects with similar tickets obtained from the Bowring 
collection. A peculiar form, with very long, slender, ferruginous antenne, shining, 
sparsely pilose, red femora, a sharply sulcate prothorax, and uniform coppery-white 
scales. It is allied to S. tenwicornis. 
8. Steirarrhinus lineatocollis, sp. n. 
Q. Moderately elongate, piceous or fusco-ferruginous, thickly clothed (the femora included) with small 
olivaceous or cinereous scales, intermixed with minute, decumbent, hair-like scales. Head and rostrum 
narrowly sulcate from the y-shaped inter-antennal ridge, the rostrum widened towards the base ; 
antennee very slender, reaching to about the basal third of the elytra, joint 2 of the funiculus more 
than twice the length of, and 3-7 each as long as, 1, the club long and acuminate. Prothorax short, 
subconical, slightly narrowed at the base, finely punctate, shallowly transversely plicate on each side, and 
with a smooth, bare, narrow median sulcus. Scutellum depressed, very small. LElytra broad, widened 
to the middle, feebly sinuate at the base; regularly punctate-striate, the interstices rather convex. 
Tibi and tarsi slender, the anterior tibiae unarmed. 
Length 72-73, breadth 2,%;,-3 millim. 
Hab. Costa Rica, Cachi (Rogers); Panama, Volcan de Chiriqui 4000 feet 
(Champion). 
Two females, the Costa Rican example imperfect. Separable from all the varieties 
of S. nebulosus by the longer and more slender antenne, with narrower club, the 
conspicuous smooth median channel on the prothorax, the more slender legs, and 
the simple anterior tibie. S. cupreotinctus (the male only of which is known) has a 
similar groove on the prothorax; but in that insect the femora are smoother, the 
basal joint of the tarsi is stouter, the antennal club is unusually elongate, &c. 
9. Steirarrhinus bicinctus, sp.n. (Tab. IX. tig. 33, 2.) 
Moderately elongate, piceous, variegated with a rather dense clothing of brownish-cinereous and brown 
scales, intermixed with minute, decumbent, scattered, hair-like scales, the light scales condensed into a 
broad stripe on each side of the prothorax (a space down the middle being almost bare) and two oblique 
angulate fasciee and a humeral patch on the elytra. Head and rostrum sharply sulcate down the middle ; 
antenne slender, moderately long, the scape reaching the posterior margin of the eyes, joint 2 of the 
funiculus twice as long as 1, 3-7 becoming stouter outwards, the club stout and acuminate. Prothorax 
strongly transverse, bisinuate at the base, subcylindrical, slightly narrowed anteriorly. Scutellum small, 
2GG 2 
