222 RHYNCHOPHORA. 
6°. Prothorax broadly margined (as seen from behind) and strongly 
bisinuate at the base, transverse, rounded at the sides; second 
joint of funiculus long. 
ce’, Antenne and legs long; prothorax not much narrower than the 
elytrain S 2 6 ee ee ee ee ee ee NavPactus. 
d°’. Antenne and legs shorter; prothorax very much narrower than 
the elytra in both sexes . . - - ee + ee ee + +) 6.) 6GERMARIELLA. 
Bb, Antenne and legs (in the N.-American, Mexican, and other forms 
belonging to Schénherr’s Stirps 2) stouter—the scape reaching the 
middle of the eye, and the tarsi broad, at leastin gg . . . . . . Cypnus, 
4. Antennal scape flattened and dilated, or strongly clavate. 
c'. Elytra with the outer striz: coalescent at basal third ; prothorax short, 
cylindrical; elytra broad, oblong-subquadrate, and tuberculate ; 
anterior tibiz dilated and strongly sinuate within . . . . . . . TETRAGONoMUs. 
a. Elytra with the outer strize entire; prothorax broader, subconical ; 
, elytra not tuberculate ; anterior tibie not dilated. 
c’. Anterior tibiz toothed at outer apical angle; all the femora simply 
clavate 2... ew eee ee ee ee eee eee e)6 MG ALOSTYLUS. 
d’, Anterior tibie unarmed at outer apical angle; posterior femora 
dentate; head small; body densely setose. . . . . « « . . MeGALostyzopes. 
STEIRARRHINUS, gen. nov. 
Steirarhinus, Jekel, in litt. 
Rostrum broad, subquadrate, sulcate, flattened, with the secondary nasal plate limited behind by a v-shaped 
_ ridge or groove between the points of insertion of the antenne, the bare nasal plate extremely short 
and notched in front, the scrobes deep, lateral, sinuous, and extending as far downwards as the lower 
margin of the eyes, the latter convex, rounded, prominent, strictly lateral, and well separated from the 
prothorax ; antennw long and slender, the scape clavate at the tip and sometimes reaching beyond 
the anterior margin of the prothorax, the second joint of the funiculus about twice as long as 1; 
mentum transverse, covering the maxille; prothorax short, subcylindrical, conical in S. conicollis ¢ , 
narrowly margined at the base; scutellum very small; elytra subparallel in $, broader and widened 
posteriorly in @, the humeri moderately prominent, the outer striw entire, becoming divergent 
anteriorly; femora unarmed, clavate, the anterior pair stout; anterior tibize usually more or less 
distinctly denticulate or serrulate; posterior tibia with the articular surface ascending, densely ciliate 
externally, the apex not or narrowly laminate, the second row of sete wanting in the forms with more 
slender legs; tarsal claws long, free; body elongate or oblong, winged, squamose; sexes dissimilar 
in form. 
Type, S. conicollis. 
The numerous forms referred to this genus (which will include Mimographus rufipes, 
suturalis, and griseus, Kirsch) may be briefly described as Hoplopacti* (represented 
by such species as the Brazilian H. lateralis, Arrow) with unarmed anterior femora, 
long, slender antenne, and an elongate second joint to the funiculus. The females of 
some of the species, as in Mimographus, Hoplopactus, and Cyphus, have a more or less 
* Hoplopactus, Chevrolat, Bull. Soc. Ent. Fr. 1879, p. lxxxiv, = Diaphorus, Faust (renamed Diapherontus 
by Berg in 1898), Stett. ent. Zeit. 1892, p. 7. 
