NATURAL SCIENCES OF PHILADELPHIA. 359 



strong fold from orbit over tympanum. Three outer fingers slightly webbed ; 

 nearly three phalanges of the fourth toe free, the web, however, margining 

 its outer side. Heel of the extended hind limb reaching beyond the muzzle. 

 Breadth of gular region from angle to angle of mandible, 9 lines ; length of 

 head and body 1 in. 10 lines ; of anterior extremity 1 in. ; of posterior 4 

 in. Color above grayish-brown, shaded with a pale plumbeous tint, like the 

 bloom of some fruit. Abdomen, upper jaw, postorbital region, and the bor- 

 ders of the upper eyelid, tarsus and antebrachium, and of a brown spot near 

 the vent, white. A dark brown line on the canthus rostralis, and band be- 

 tween the eyes ; a longitudinal band or series of spots on the back, which 

 bifurcates anteriorly ; a spot on the coccyx. A dark brown band from angle 

 of eye to scapular region, involving the whole of the tympanum. Femur with 

 narrow cross-bands ; posterior face reticulate or unicolor. Tibia} more broadly 

 cross-banded. Sides with brownish vermiculations. Gular region brown 

 shaded.* From Turbo. No. 4347. 



Additions to the Nomenclature of North American LEPIDOPTESA. No. 2. 



BY AUG. R. GROTE. 



On pages 59, 60, Proc. Acad. Nat. Sci., 1862, I described three species of 

 Heterocera, under the genus Platypterix, Lasp., adopting the classification of 

 Heydenreich, in his Cat. Method. Lepidop. Europ. 



I have since recognized my P. formula to be identical with Drepana rosea, 

 Walker, C. B. M. viii. and also with Cilix Americana, H. S. Lepidop. Exot. 

 p. 60, fig. 470. 



This species seems, however, properly classified under neither of the above 

 genera, and for the reasons following. The genus Cilix, Leach, was created 

 for such Heterocera, which, closely allied to Platypterix, Lasp., are aberrant 

 from that generic type by the straight outer margin of the anterior wings. It 

 was established upon a European species, C. spinula, H., formerly included and 

 described under Platypterix, Lasp., as the termination of its specific name in- 

 dicates. Herrich-Schaeffer is, however, evidently in error, in placing his C. 

 Americana under Cilix, Leach, as the outer margin of the anterior wings, unlike 

 the type of that genus, is faleate ; differing, on the other hand, from Drepana, 



*A species in the Smithsonian Museum, obtained by Dr. Chas. Sartorius at Mirador, Vera 

 Cruz, resembles this species in most respects. It is, however, different in the following 

 respects : 



It is dark slate above, with blackish confluent spots, in two parallel series ; there are 

 no white borders or anal spot. Gular region uniform yellowish ; a few warts on hinder 

 face of antebrachium. Posterior face of femur uniform slate. No light spot under eye ; 

 broad cross-bands on femur and tibia. Heel reaching anterior border of orbit. Length 

 from muzzle to vent 3 inches. It is allied apparently to Baird's H. v a n v 1 i e t i i. It 

 may be called II. m u r i c o 1 o r. 



A beautiful species has been presented to the Academy by Capt. Field, in a collection 

 made by him in Panama. It is Hyla callidryas of the author, and may be distin- 

 guished as follows : 



Head elongate, maxillary outlines convergent, nearly straight; loreal region subvertical, 

 canthus rostralis straight, rounded. Eyes not large, transparent portion of inferior pal- 

 pebra reticulated with white ; iris cupreous. Tympanum nearly as large as eye, ob- 

 liquely elliptic. Tongue elongate elliptic, openly emarginate. Inner nares large, widely 

 separate; vomerine teeth between them, in two oblique series, convergent posteriorly, 

 anteriorly opposite anterior border of nares. Fingers one fourth webbed ; pallettes very 

 larse; toes one-half palmate, margined. Heel reaching end of muzzle when extended. 

 Skin above smooth. From muzzle to vent 1 inch 9 lines ; do. to angle of mouth 7 lines 



Blue purple above, greenish on the scapular region; humerus, femur, except a narrow 

 blue stripe, and under surfaces, uniform saffron. Numerous oblique bauds of a lighter 

 yellow on the sides. 



1862.] 



