NEUROPTERA PLANIPENNIA SIALINA. 157 



in the middle of the outer halt', of the winy: beyond the origin of the first 

 sector, or the broken set of transverse veinlets of which its base forms the 

 origin, tin-re ure four or live very long sabhexagonal cell- just below the 

 radius, the third from the base reaching- the middle of the pterostigma. 

 The number of sectors is so large that, omitting tin- marginal cells, tin-re 

 jwe six radiating series of cells between the radius and the anal vein. The 

 cells of the marginal scries are of very varying si/.e and shape, but the vein.- 

 which form them are very rarely forked. 



Length of thurax and abdomen, 7.5'"'"; of win-, !!""" : breadth of 



same, 25""". 



Florissant, One specimen, No. 1.385, obtained by the Princeton Expe- 

 dition. 



'2. INOCELLIA SOMNOLENT A. 



PI. 14, 



One specimen belonging here, with its reverse, consists of a head and 

 thorax with fragments of legs and wings, among the latter one nearly per- 

 fect front wing overlying part of a hind wing. The head is slender and 

 very long oval in shape ; the thorax stout with a greatly and regularly 

 tapering prothorax forming anteriorly a very slender neck. Front wing 

 well rounded, rather broad for its length, though its exact breadth can not 

 IK- told from the broken edges. The neuration is distinct and black, the 

 pterostigma faint, fuliginous, long, and equal, about four times as long as 

 broad, squarely margined basally, obliquely margined distally. The costal 

 margin is nearly straight, gently and slightly expanded, the subcostal vein 

 terminating upon it before it reaches the pterostigma by nearly the length 

 of the latter. Beyond the basal cell, which is bisected by the last sector, 

 and correspoi.ds to the cell situated within the broken series of transverse 

 veinlets in I. veterana, there are immediately below the radius- three very 

 long subpentagonal cells, the second reaching beyond the middle of the 

 pteroMiinna. ( tinitting the cells which border the margin, there are li\e 

 radiating series of cells between the pterostigma and the anal vein ; tin- 

 cells are fairly large, varying much in shape but rarely more than twice as 

 long as broad, the terminal veinlets next the margin frequently and \\iih-ly 

 forked. 



