28 TERTIARY RHYNCHOPHOROUS COLEOPTERA. 
ally large, scarcely less than 0.02™" in diameter; rostrum excessively slen- 
der. Prothorax very delicately and uniformly granulate, and also, as far as 
‘xan be seen, but less delicately, the abdominal segments. Elytra with 
granulate carinze, the interspaces delicately granulate 
heavy and coarsely 
like the thorax. 
Length, excluding rostrum, 3°15"; height, 2™™. 
Florissant, Colorado. One specimen, No. 13600. 
STEGANUS (6reyavés'), gen. nov. 
A very different type from any others in the subfamily, but linked to 
them by several characteristic features, and especially recalling the larger 
Isotheini in its elongate form. The head is excessively short in proportion 
to its height, and appears as if enveloped in the large hood-like prothorax. 
The eyes are small, transversely oval. The beak is separated from the 
head by a distinct though fine constriction, is slender, scarcely arcuate, por- 
rect, fully as long as the prothorax. The antennz are not preserved. The 
prothorax is tumid, considerably higher than long, roughly sculptured. 
The elytra are also rather coarsely sculptured, but are scarcely at all arched. 
The legs, excepting the stout fore femora, are slight and of moderate length. 
Apparently the pygidium is covered. ; 
A single species occurs, in the Roan mountains of western Colorado. 
STEGANUS BARRANDEI. 
Pl.yvin, Fig: 5: 
The head and rostrum are perfectly smooth, the former at least four 
times as high as long; the transverse eyes are scarcely longer than the 
width of the slender rostrum, which is somewhat longer than the prothorax, 
narrows at the base, and beyond is equal and very slender. Prothorax 
well arched above, truncate at each extremity, coarsely punctato-rugose. 
Elytra punctato-rugose, but more densely than the prothorax, and with dis- 
tinct longitudinal arrangement, the puncta following faintly impressed 
striz much narrower than they. 
‘Tn allusion to the enveloped head. 
