XL Notes ok tiie Peeping Frog, Hyla Pickeringii LeConte. 

 By Mary H. Hinckley. 



(Presented October 3, 1883.) 



Hylodes Pickeringii Holbr. N. Amer. Herp., vol. iv., p. 135, pi. 34. Hylodes Pickeringii 

 Nichols, Journ. Essex Co. Nat. Hist. Soc, No. 2. Pickering's Hylodes Storer, Report on 

 Rept. Mass., p. 240. Hyla Pickeringii LeConte, Proc. Ac. Philad., vol. vn., p. 429, 

 1854. Hylodes Pickeringii DeKay, New York Fauna, p. 69, fig. 51. Acris Picker- 

 ingii Giintli., Brit. Mus. Cat. Batrachia Salientia, p. 71. Hyla Pickeringii Boulenger, 

 Brit. Mus. Cat. 1882, p. 399. 



Description. 



m 



Adidt. Head moderate in size, as broad as long, about two-fifths length of body for 

 male, a little less for the female. Muzzle somewhat pointed, and projecting beyond mouth 

 opening; canthus rostralis distinct; loreal region somewhat concave; nostrils nearer 

 tip of snout than eye ; pupil horizontal, when partly dilated shows angle at the base ; 

 tympanum small and indistinct ; tongue heart-shaped, free behind ; teeth in two small 

 rather oblique groups, back of inner opening of nostrils. Male with dark colored vocal 

 sac, outside muscles of throat. Arm longer than tibia, thick in males; fingers free, first 

 short. The hind limb being brought forward the heel reaches the eye ; tibia a little 

 longer than thigh ; heel and toes a little more than half as long again as the tibia ; feet 

 less than half-webbed ; tubercles under hands and feet moderate ; two metatarsal tuber- 

 cles, outer small and obscure ; tips of fingers and toes dilated into moderate sized disks. 

 The skin is either smooth or minutely granulate above ; beneath granulate ; a fold across 

 the chest. Coloration in variable shades of brown above, dotted with darker and with ir- 

 regular lines not always symmetrical, frequently an x-shaped marking on the back ; a 

 dark brown streak from tip of snout through the eye to about the middle of the side of 

 body ; generally a dark band or chevron between the eyes ; limbs cross-barred ; beneath 

 dull creamy-white, female sometimes with a few spots of brown or dusky on throat 

 and chest; region of groin often yellow. Iris reddish, especially when frog is excited. 



MEMOIRS BOST. SOC. NAT. HIST. VOL. III. 41 



