132 



BULLETIN 34, UNITED STATES NATIONAL MUSEUM. 



Besides specimens from Cbestcr County, Pa., from Huntingdon 

 County, Pa., and from Chicago, 111., in the Museum of the Philadelphia 

 Academy of Natural Sciences, the following are in the National Museum. 

 Professor Verrill says it is abundant near New Haven, and the Essex 

 Institute possesses it from Gloucester and Beverly, Mass. Dr. J. E. 

 Gray, Catalogue of British Museum, gives Niagara. Dr. K. W. Gibbes 

 described it from Abbeville, S. C. 



Semi daely Hum scutaium Tsch. 

 EESERVE SEEIES. 



Catalogue 



No. of 



number. 



spec. 



4083 



1 



4088 



o 



4730 



1 



4093 



1 



4094 



9 



4089 



4 



4090 



3 



3743 



1 



14459 



1 



4091 



1 



4724 



1 



Locality. 



Carlisle, Pa 



do 



St. Catherine's, Canada. 



Kipley, Obio 



Northfleld,IIl 



Meadville, Pa 



Riceborough, Ga 



Anderson, S. C 



(?) 



Wasbington, D. C 



Georgia 



When 

 collected. 



From whom received. 



Prof.S. F.Baird.. 



do 



Dr. D. W. Beadle 



P.R.Hoy 



E. Kennicott 



Williams 



(') 



Mrs. Daniel 



(?) 



(?) 



Dr. J. Jones 



Nature of 

 specimen. 



Alcoholic. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 



PLETHODON Tschudi. 



System d. Batrachier, Trans, Ncucbatel, 1838, 59-92; Bonap., Fauna 

 Ital., II, 13L Baird, Journ. Ac. Nat. Sci., Phila., 1, 292; Hallowell, ib., 

 1858, 342; Cope, Proc. Ac. Nat. Sci., Phila., 1869, 124; Boulenger, 

 Cat. Batr. Grad. Brit. Mus., ii ed., 1882, p. 53. 



Heredia Girard, Proceed. Acad., PMla., 1856, p. 735. 



Tongue attached by the median line below, from the glosshyal bone 

 to near the anterior margin ; vomerine and parasphenoid teeth xDresent; 

 a large fontanelle between the spines of the separate premaxillary bones. 

 Toes 4-5, normal. Anterior teeth not enlarged. Cranium well ossified. 

 Prefrontal bone present. 



This genus is higMy characteristic of the Begio nearctica, where five 

 species represent it on the Pacific slope and three in the eastern dis- 

 trict. A species from Japan, named P. persimilis by Gray, is shown by 

 Mivart not to belong to this genus. The species are all terrestrial in 

 their habits, and three which I have observed (P. oregonensis, P. gluti- 

 nosus, P. cinereus) undergo their metamorphosis while quite small. 

 The last named, and probably P. glutinosus, never enter the water, but 

 are hatched in damp places on land. The branchiae have therefore 

 no functional service. The species are as follows ; 



