772 BULLETIN UNITED STATES GEOLOGICAL SURVEY. 



family of Fulgorida, but of which little more can be said. The thorax is 

 large, globose, and black ; the scutellum is about half as large as the 

 thorax, louger than broad, and rounded at the apex ; the abdomen tapers 

 gently, its apex about half as broad as its base, and is provided with a 

 pair of overlapping, black, roundish, oval plates, giving the appearance 

 of an additional segment. The surface of the thorax and abdomen is 

 thickly and uniformly granulate with circular, dark-edged elevations, 

 averaging 0.04'"'" in diameter j the scutellum lacks this marking, except- 

 ing at the edges, which are more minutely and profusely granulate. 



Length of body S-S"""", of thorax 2.75'"'", of scutellum 1.4'"'", of appen- 

 dages 1""" ; breadth of thorax 2.5""*, of scutellum 1.25"'"', of second seg- 

 ment of abdomen 2.2"'"'. 



Aphaiia rotundipennis. — This name is proposed for a single broken 

 wing of an Homopteron (E"o. 175), with which another wing (No. 4187), 

 still more imperfect, appears to agree; and which seem by their obscure 

 venation to belong in the same group as the White Eiver fossil which 

 I have called ApJiana atava. It difl'ers, however, in having a strongly 

 bowed costa, which is curved more apically than near the base, and con- 

 tinues very regularly the curve of the well-rounded apex ; the commissu- 

 ral border is perfectly straight ; the principal veins fork near the base, 

 so that there are a number of longitudinal veins a short distance there- 

 from ; no transverse veins are discernible, nor oblique veins at the cos- 

 tal margin, but the longitudinal veins all fork at a similar distance from 

 the apex, so that the apical fifth of the wing is filled with still more 

 numerous longitudinal veins; the tegmina are broadest just beyond 

 the middle. 



Length of tegmina 6.75"'"'; breadth of same 3"'™. 



Lystra f Bichardsoni. — I have before me a number of specimens (ISTos. 

 67, 119, 4076, 4207, 4208, 4212, 4217) of a large Fulgorid, apparently 

 belonging near Lystra and Poeocera, but which have only been preserved 

 in a fragmentary condition. Enough, however, remains to show several 

 features; the vertex between the eyes is half as broad again as the eyes, 

 and at least as long as broad, projecting beyond the eyes by more than 

 , the diameter of the latter, and well rounded. The scutellum is large, 

 fully as long as broad. The longitudinal veins of the tegmina are 

 rather infrequent, forking rarely, and even toward the apex seldom 

 connected by cross-veins ; apparently, all the principal veins branch at 

 about the same points, viz, near the middle of the basal and of the 

 apical half; the tegmina somewhat surpass the abdomen. The body is 

 broadest at the second or the third abdominal segment, and tapers 

 rapidly to a point, the segments being equal in length. 



Length of body 16"'"'; probable length of tegpiina IS.S™""; breadth of 

 abdomen 5.5"™. 



(ClXTINA.) 



Cixiits f hesperidum. — A single fragment (No. 38), representing a nearly 

 perfect tegmen, with obscure venation, is probably to be referred to Cix- 



