28 TERTIARY RMYNCHOPllOROUS COLEOPTERA, 



ally lai-ge, scarcely less than 0.02"'" iu diameter; rostriiiii excessively slen- 

 der. Prothorax very delicately and uniformly granulate, and also, as far as 

 can be seen, but less delicately, the abdominal segments. Elytra with 

 heavy and coarsely granulate carinas, the interspaces delicately granulate 

 like the thorax. 



Length, excluding rostrum, 3-1 5"""; height, 2°"". 



Florissant, Colorado. One specimen, No. 13600. 



STEGANUS {oTeyavd^'), 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 antennae 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, iu the Roan mountains of western Colorado. 



Steganus barrandei. 



PL VIII, Fig. 5. 



The head and rostrum are perfectly smooth, the former at least four 

 times as high as long; tlie transverse eyes are scarcely longer than the 

 width of the slender rostrum, whicli 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, tlie puncta following faintly impressed 

 striae much narrower than they. 



■ ' In iillii8iuu to the enveloped head. 



