DUNN: AMPHIBIA CAUDATA. 461 



lection are dark and the stripes cannot be distinguished. These are 

 all large, in fact the four largest. The stripe is straight edged on the 

 tail. 



4. There is a light vertical line rising from the lip between the 

 nostrils. On reaching the top of the head it forks and passes back- 

 wards along the canthus rostralis to the eye. The vertical line is 

 never present in P. cincreus and the line along the canthus is very 

 faint. 



These are sufficient to show a form different from our common 

 eastern Plethodon cinereus. Its status, however, is not easy to fix. 

 Cope, in describing it from Louisville, Ky., mentions one which he 

 found "in a bottle with common varieties of the P. erythronotus, the 

 Spelerpes bilineatus, and Dcsmognathus, all from Essex County, 

 Mass." These were in the Museum of the Essex Institute. 



I think that this record can be disregarded for the present. In 

 1892 Cope recorded PldJiodon cinereus dorsalis from Franklin, Venango 

 Co., Pa. Possibly this was the recently described P. wehrlci, but it 

 may have been P. dorsalis, which occurs in Ohio. He also mentions 

 one U. S. N. M. 3,825 from Ripley, Ohio, which had sixteen costal 

 grooves and the proportions of P. dorsalis. He, however, calls it 

 P. cinereus, as it was melanistic. Now P. cinereus never has as few 

 as sixteen costal grooves, and as P. dorsalis has also a dark phase, 

 there is no reason why this specimen is not P. dorsalis. Cope states 

 that in P. dorsalis the distance from snout to armpit is contained only 

 three times in that from snout to groin, instead of 3^ or 3^, as in 

 P. cinereus. As a matter of fact it is three in both. 



O. P. Hay in his Batrachians and reptiles of Indiana in 1891 

 records P. dorsalis from Wyandotte Cave, near Louisville, Ky., and 

 at Bloomington, Ind. 



In 1907 McAtee, (List of the mammals, reptiles and batrachians 

 of Monroe County, Indiana. Proc Biol. soc. Washington,) records 

 P. cinereus, P. dorsalis, and P. erythronotus and states that P. dorsalis 

 is rare. 



He states that P. erythronotus is found in comparatively dry places 

 and that the other two are found near water. This may be significant 

 when we consider that there is a distinct possibility that McAtee's 

 P. cinereus may have been the dark phase of P. dorsalis. 



The same applies to Hahn's statement in The fauna of Mayfield's 

 Cave. Publication 67, ^Carnegie inst., 1907. Mayfield's Cave is in 

 Monroe Co., Ind. Hahn records two P. cinereus and one P. dorsalis 

 taken in the Cave. 



