163 



10. Chrysophanus Thoe Westw. Meadows ; quite rare ; 

 September. 



11. Chrysophanus Epixanthe Westw. Lycaena Epix- 

 anthe Harr. Meadows ; very rare ; July. 



12. Polyommatus Porsenna nov. sp. Above brownish 

 black. Primaries with two connected, large, triangular, 

 fulvous spots, the inner one largest with its apes at the ' 

 base of the wing, and divided from the apex more than 

 half way down the middle by a black club-shaped dash ; 

 the outer one with its base towards the lower half of outer 

 border, notched in the middle of the side toward the 

 apex of the wing. Secondaries having the outer third, 

 except at outer angles, fulvous, with a submarginal series 

 of unequal brownish spots, largest toward inner angle. 

 Beneath cinnamon-brown. Primages with the disk yellow- 

 ish, a subcostal series of four reddish-brown spots bordered 

 with white, iiicreasing in size outwardly, the outermost 

 near the apex and triple, two large brown spots near the 

 anal angle, and a clubbed streak of same color, corres- 

 ponding in position to that above, but much broader. 

 Secondaries entirely covered with spots like the central 

 ones of the subcostal series of primaries. Expanse of 

 wings 1 1-3 in. 



This species is exceedingly closely allied to P. Tarquinius 

 Boisd. and Lee. from which it may readily be distinguished 

 by its range and by having many of the spots of the under 

 surface larger and more distinct ; the condition of my 

 specimens of P. Tarquinius will not now allow of a 

 detailed comparison. I have seen only males of either ; 

 the male of P. Tarquinius is figured by Abbot in Boisduval 

 and Leconte, and that of P. Porsenna by Hewitson in. 

 Doubleday and Westwood's Genera ; in some unpublished 

 drawings of Abbot's in the Library of the late Dr. Harris, 

 now in possesion of the Boston Society of Natural History, 

 is figured the female also of P. Tarquinius ; it differs from 

 the male in wanting the band along costal border, with the 

 exception of a narrow stripe on the sub-costal, having a small 

 square spot just beyond its termination near the middle of 

 the wing, and a transverse series of dots below the latter ; the 

 band on the outer border is also broken up into a large square 

 apical spot, an interrupted, rather narrow, marginal border, 



