NEUROPTERA— PLANIPENNIA— SIALINA, 157 



ill the middle of the outer half, of the wing ; beyond the origin of the first 

 sector, or the In-oken set of transverse veinlets of which its base forms the 

 origin, there are four or five very long subhexagonal cells just below the 

 i-adius, the third from the base reaching the middle of the pterostigma. 

 The number of sectors is so large that, omitting the marginal cells, there 

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

 cells of the marginal series are of very varying size and shape, but the veins 

 which form them are very rarely forked. 



Length of thorax and abdomen, 7.5"""; of wing, 9"""; breadth of 

 same, 25'"". 



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

 dition. 



2. Inocellia somnolenta. 



PI. 14, Fig. 12 ( 9 ). 



One specimen belonging here, witli 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 

 be 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 

 mai'gin 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 corresponds to the cell situated within the broken series of transverse 

 veinlets in I. veterana, there are immediatel}' below the radius three very 

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

 pterostigma. Omitting the cells which border the margin, there are five 

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

 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 widely 

 forked. 



