PAMPHILITES. 67 



not executed with sufficient care, for of the first and second superior subcostal 

 nervules he has made but one. The principal difference between Pansydia and the 

 fossil genus is in the fourth superior subcostal nervule; in Pansydiathis terminates 

 upon the costal border just before the apex of the wing, while in Pamphilites it 

 terminates on the outer border just below the apex of the wing, bringing the latter 

 into a different interspace in the two genera. From Cai'ystus it differs, not only 

 in having a proportionally shorter cell, but in the same point as that in which it 

 is distinguishable from Pansydia; and further in the uppermost median nervule, 

 which in Carystus is thrown off abruptly from the nervure just beyond its second 

 divarication and which, by curving strongly, makes the upper median interspace 

 of nearly equal width throughout; while in Pamphilites, the nervule parts gently 

 from the nervure like the others, and at some distance beyond its second divari- 

 cation, passing in a regular curved line to the outer border, and causing the upper 

 median interspace to increase in breadth throughout the whole of its basal half. 



In the disposition of its spots, Pamphilites (PI. Ill, figs. 14, 17) agrees per- 

 haps better with Carystus (PI. Ill, fig. 19) than with Fansydia (PL III, fig. 15) . 

 This is especially true of the large spots in the cell and in the lower two median 

 interspaces; although in Carystus the spots of the median interspaces are further 

 removed from the base than in Pamphilites, while the opposite is true of the spot 

 surmounting the submedian nervure; the submarginal spots beyond the cell of 

 Pamphilites are wanting in Carystus, and the latter genus has but two of the three 

 subcostal spots of Pamphilites. The spots of Pansydia are smaller and far less 

 conspicuous than in Pamphilites, that of the cell being reduced almost to a dot; 

 the median spots are however large, though removed farther from the base, as in 

 Carystus; there is also a small spot in the upper median interspace, but further 

 from the margin than in Pamphilites and unaccompanied by any spot in the 

 interspace beyond the cell; as in Carystus, the spot surmounting the submedian 

 nervure is further from the outer margin than in Pamphilites, but the subcostal 

 spots accord very well with those of the fossil. 



By these considerations it would appear that Pansydia is to be placed between 

 Carystus and Pamphilites, the latter being more nearly related to Pansydia than 



