STEIRARRHINUS. 223 
distinct, short, impressed, oblique line on each side of the fifth ventral segment 
in front. 8S. conicus approaches Cyphus; 8S. tenuicornis has the facies of a 
Polydrosus. 
a. Posterior tibiz without a definite enclosed space along the apical margin, at 
least in @. 
a‘. Prothorax with or without a narrow inconspicuous median groove. 
a’, Anterior tibiz serrulate, feebly or sharply unguiculate, antennee 
moderately elongate. 
a’. Elytra immaculate, cinereous. 
a’, Prothorax subcylindrical in g, conicalin?. . . . . . . «= conicollis. 
6*. Prothorax similarly shaped in g and 2 . . . 1... Omfucatus. 
6°. Elytra maculate, sometimes metallic . 2. 2. . 2. 1. wee nebulosus. 
6°. Anterior tibize sinuous, sharply denticulate, tngniculate ; elytra cinereo- 
maculate. . . . ...... . Loe ee ew SUrKUPES. 
. Anterior tibiz closely serrulate, unguiculate antenne very elongate ; 
body uniformly clothed with green scales . . . . oe ee guatemaltecus. 
d’. Anterior tibie unarmed; antenne very elongate , body clothed with 
green scales, except along the median line above . . . . . . . tenwicornis. 
b'. Prothorax with a conspicuous smooth bare median groove; anterior 
tibize unarmed ; body clothed with uniformly coloured scales. 
e’. Femora shining, sparsely pilose; antenne (3) very elongate. . . . cupreotinctus. 
jf’. Femora squamose; antennee(?) much shorter . . . . . . . . lineatocollis. 
6. Posterior tibiz with a narrow, definite, squamose, enclosed space along the 
apical margin. 
c', Anterior tibiz serrulate and unguiculate ; third tarsal joint broad; elytra 
obliquely cinereo-fasciate . . . . 2. 2. ww 2 ee ee ©) Dicinetus. 
ad’, Anterior tibiz obsoletely serrulate, unguiculate ; second joint of funiculus 
comparatively short; elytra cinereo-guttate. . . . . . . . . . cinereoguttatus. 
e'. Anterior tibie simply unguiculate ; elytra fusco-fasciate . . . . . . cinctipennis. 
1. Steirarrhinus conicollis, sp.n. (Tab. IX. figg. 23, 23a, b, o; 24, 2.) 
Steirarhinus conicollis (3 2), amplipennis (2), and naupactoides (3), Jekel, in litt. 
Moderately elongate, narrow (¢), much broader (?), nigro-piceous or obscure ferruginous; above and 
beneath densely clothed with whitish or cinereous scales, with minute decumbent, hair-like scales 
intermixed. Rostrum widened towards the base, with a narrow sulcus extending down the middle 
from the v-shaped inter-antennal ridge to the base of the head, and finely carinate towards the sides. 
Antenne slender, moderately long, joint 2 of the funiculus nearly twice as long as 1, 3-7 becoming 
stouter outwards, the club acuminate-ovate. Prothorax transverse, broad and conical in 9, narrower 
and with the sides subparallel at the base in ¢; obsoletely canaliculate and finely punctate. Scutellum 
very smallin ¢, larger in 2. LElytra very gradually narrowing from the rather prominent humeri in 
g, much broader and widening to the middle in 9, feebly bisinuate at the base; regularly punctate- 
striate, the interstices feebly convex. Tibie and tarsi rather slender, the anterior tibiew feebly unguiculate 
and closely serrulate. Penis-sheath of ¢ sinuate (as seen in profile), acuminate and reflexed at the tip 
(fig. 23 4). 
Length 53-8, breadth 2-33 millim. (¢ 9.) 
