NEORIXOPJS. 11 



from the base to the apex of the wing, the second beyond the cell, but scarcely 

 beyond the middle of the wing; the third at a less distance from the base of 

 the second than that is from the first, and directly below a point midway 

 between the tip of the costal nervure and that of the first superior subcostal 

 nervule; the fourth near the extremity of the wing and but little before the tip 

 of the third superior nervule, or at about two-thirds the distance from the base 

 of the third superior subcostal nervule to the tip of the subcostal nervure; the 

 first inferior subcostal nervule originates of course at the tip of the cell, and 

 separates but narrowly from the main stem, from which it diverges very gradu- 

 ally as far as the base of the outer superior nervule, where the main stem ap- 

 proaches it again; the lowermost inferior subcostal nervule arises from the first 

 inferior scarcely beyond its base, curves inward, downward and then outward be- 

 fore taking a course parallel to the nervule above, from which it is separated at 

 its base by twice the distance that the former is there distant from the sub- 

 costal nervure; the vein closing the cell can scarcely be called a vein, but 

 rather a break in the membrane such as is often seen in recent butterflies, and 

 is indicated in the fossil by a curving granulated streak; it arises from the 

 final curve of the lowermost inferior subcostal nervule opposite and directly 

 below its origin; it passes thence in a slightly curved line, opening outward, 

 to the very base of the upper branch of the median nervure. The median ner- 

 vure runs in a straight line as far as its first divarication, which is a little 

 beyond the middle of the cell; thence it is bent parallel to the subcostal ner- 

 vure and exactly at the lower tip of the cell forks, the branches parting but 

 gradually from each other, the upper gently curved, the lower nearly straight. 

 The submedian nervure is parallel to the lowest median nervule, as in Ncorina, 

 etc. Jfone of the veins are swollen at the base. The cell is three and a half 

 times longer than broad. 



In the hind wing the neuration is almost precisely that of Neorina Lowii (PI. 

 II, fig. 8) . The costal and subcostal veins are confluent for a short distance, when 

 the costal parts from its neighbor at nearly right angles and immediately 

 thereafter sends up the basal shoot, which, after passing in a straight line half 



