1883.] 



NATURAL SCIENCES OF PHILADELPHIA. 



25 



length of the body (with vent) to the gular fold. Costal folds 13. 

 Head a longitudinal oval, with rather narrowed, and not truncate 

 muzzle ; its length (to occiput) contained three and two-third 

 times in length from muzzle to groin. 



Limbs short ; when pressed along the side they are separated 

 by three intercostal spaces. The digits are short, and the internal 

 ones are rudimental. 



The color is black everywhere, and the superior surfaces are 

 dusted Qver with minute light specks. 



Measurements. 



Total length, 



Length from muzzle to axilla, 

 Length from muzzle to groin. 

 Width of head at canthus oris, 

 Length of anterior limb, 

 Length of anterior foot, 

 Length of posterior limb. 

 Length of posterior foot. 



M. 



•053 



•0105 



•02T5 



•006 



•006 



•002 



•0015 



•0032 



This species is to be compared with the Plethodon intermedius 

 of western Oregon. It is shorter and more robust in form, having 

 only thirteen costal plicae instead of fifteen.' The color is verj'- 

 different. 



This species is named from the aboriginal name leka, of the 

 grand peak of northern California, Mount Shasta. From the 

 same name the town of Yreka derives its name. So I am informed 

 by Judge Roseborough of that place, to whom I am under great 

 obligations for many facilities and much information. 



Cynops torosus Esch. Diemi/ct.i/ln'i tDi-nxus Cope, Cheek List, Batr. Rejit., N. Amer. 



Bufo halophilus Bd. and (4iid. 



Hyla ^egilla B. and G. 

 The tj^pical form. 



Rana pachyderma sp. nov. 



Represented by five specimens of different ages and sizes from 



' On page 99, Proc. Phila. Academy, 1869, in my monograph of the Ple- 

 thodontidm the number of plicae is given at 13. This is a misprint for 15. 

 On p. 209, Proceedings for 1867, the number is correctly given as 15. 



.3 



