456 BULLETIN UNITED STATES GEOLOGICAL SURVEY. 



the sides steeply rounded, the anterior margin narrowly, the poste- 

 rior margin broadly, and the flat, middle line, not reaching to the base, 

 orange ; lateral margins a little obliqae, deeply decurved on the middle, 

 causing the anterior angle to be upturned, the latter almost rectangular, 

 but blunted; posterior margin a little concave, the outer angles lobate, 

 broad, flattened, obliquely recurved behind the transverse, impressed 

 line which separates the lobes, the outer margin oblique, almost trun- 

 cate ; each side anteriorly with two oblique, impressed lines. Proi^leuroe 

 orange, rugose, with the margins thickened and a little raised ; the other 

 pleural pieces, sternum, and coxae dull black, hairy, margined with or- 

 ange; the tympanic fulcra and the legs also orange, invested with ful- 

 vous pubescence; femora broadly black on the upper, fore, and hinder 

 sides ; the anterior pair also black on the under side, having two long, 

 slender, cylindrical teeth, of which the one near the middle is very 

 oblique ; apices of the tarsi and nails blackish. Mesonotum polished, 

 blue-black, obsoletely rugulose and punctate, the scutellura raised into a 

 V, carried back upon the metanotum, and blunt and tumid at tip; the 

 metanotum orange, short, with a black spot on the middle. Hemelytra 

 and wings hyaline, faintly tinged with brown toward the apex ; base, 

 tegulse, and costal nervure orange, the latter long and broadly arcuated; 

 the marginal nervure beyond the anastomosis and all the other nervules 

 blackish-piceous ; the costal areole very long and broad, the discoidal 

 also long and broad, much wider at the i30sterior end ; the areole joining 

 the tip of the costal one on its inner side short and triangular ; the api- 

 cal areoles narrow, but not very long. Abdomen black, hairy, the male 

 genital sheath very long, tubular, a little tapering. 



Length to end of genital sheath 21 millimeters ; to tip of closed 

 hemelytra 26 millimeters. Width of base of pronotum 7 millimeters. 



Collected in the vicinity of Clear Creek, Colorado, by Mr. J. Duncan 

 Putnam, to whom I take great pleasure in dedicating this pretty little 

 species. It pertains to the same group as C. areolata Uhl., agreeing 

 with it pretty nearly in the shape of the genital organs. But it differs 

 in the prominence of the eyes, in the narrower pronotum and hemelytra, 

 and in the more acutely angular ends of the areoles. Other specimens 

 have been taken at Ogden, Utah, which are identical with the type in 

 color and structure. For the specimen obtained by Mr. Putnam, I am 

 indebted to the kindness of Baron Osten Sacken. 



Family MEMBRACID^. 



Ceresa Fairm. 

 C. huhalus. 



Membracis lubalus Fab., Ent. Syst., iv, 14. 



I met with this species at every station in Colorado that aff'orded 



moisture sufficient for the growth of willows. The species is quite as 



abundant and variable as we find it to be in Maryland, Delaware, and 



