60 PROCEEDINGS OP THE ACADEMY OP 



wavy lines cross the wing from the anterior edge to the hind margin ; the 

 second and third from the base and the widest apart enclosing three dark 

 brown spots, two larger and one smaller. Outer margin of the wing brown, 

 deepening in color and widening toward the tip, which shows a slightly bluish 

 shade. Posterior wings light ochre yellow, with two black dots near the upper 

 edge, and crossed by several wavy and more or less interrupted lines. Outer 

 margin light brown. Body and thorax light ochre yellow. Under surface 

 of the wings of a lighter shade, and showing the spots on the anterior wings 

 and two dots on each of the posterior wings. Exp. 1[ inch. 



A male. Staten Island, N. Y. 



From the collection of Mr. E. L. Graef, Brooklyn, L. I. Closely allied to 

 P. f abu 1 a, but well distinguished by its ground color and divergence of the 

 wavy lines on the anterior wings. 



P. formula, nov. sp. Light roseate brown. Legs light orange on the 

 inside. Anterior wings light roseate brown, with a broad light citron yellow 

 band running from the tip to the hind margin of the wing, leaving a roseate 

 brown space between it and the outer margin, deepening in color towards the 

 inner angle of the curve. Two small white spots toward the anterior edge 

 of the wing, between which and the base of the wing an irregular deeper 

 shade-line runs down and is continued through the posterior wings to the 

 inner margin and near the base of the wing. Posterior wings same color as 

 anterior, with the citron yellow band enlarged to the whole outer margin of 

 the wing, except a small space in the upper corner, two rows of minute dark 

 spots, apparently continued from the upper wing, run through this band near 

 the outer edge of the wing. Base of the wing roseate brown, with two small 

 white spots outside of the continued dark shade line running through both 

 wings. Thorax and body roseate brown. Under surface of the wings lighter 

 shaded, showing the small dark spots more apparent and lengthened on the 

 anterior wings. Exp. 1 inch. 



A female. New York. 



With the male of this species I am not acquainted. The peculiar curving 

 of the anterior wings seem to warrant its disposition under the present genus. 

 It has the general coloring of an autumn leaf. 



Synopsis of the Species of HOLCOSUS and AMEIVA, with Diagnoses of new 

 West Indian and South American Colubridae. 



BY E. D. COPE. 



Holcosds Cope. 

 Ventral shields large, in six longitudinal rows, without keels. Femoral 

 cores present. Tail cylindrical, keels of the scales very strong. Two dermal 

 gular folds. Frontal, fronto-parietal and parietal plates very numerous ; supra- 

 orbitals forming an isolated disc. Tongue sheathed at the base. 



H. septemlineatus. 



Ameiva septemlineata Dumeril, Catal. Method. Collect. 1851, p. 114. 



Frontal plates four, occipitals five, succeeded by a transverse series of five 

 other plates. Supraoculars two. Median gular scales a little larger than those 

 surrounding, smaller than those of the postgular fold. Heels without spinous 

 tubercles. Bronze green, with seven longitudinal yellowish lines, one median, 

 three upon each side. 



Hab Tropical America. 



H. sexscutatus. 



Ameiva sexscatata Gunther, Proc. Zool. Soc. Nov. 1859. 



An anterior nasal on each side; an anterior frontal ; two posterior frontals 



[Feb. 



