THE BATRACHIA OF NORTH AMERICA. 



139 



This subspecies is readily distiugiiished from P. erythronotiis by the 

 different relative position of the limbs and number of costal furrows 

 already referred to. The very jagged or irregular outlines of the dor- 

 sal stripe, the light line on the nose, and the lighter and more reddish 

 shade of the lateral and inferior mottling will at once distinguish it as 

 far as color is concerned. The dusky shade of the sides is not continuous 

 above, but shows distinctly minute mottling of lighter. 



It is somewhat difficult to assign to this form a definite status. I 

 should be disposed to regard it as a good species, but for the fact that 

 out of a great number of specimens of the P. erijthromtus var. cinereus 

 I find a single individual (Sm. No. 3825) from Ohio which presents the 

 proportions of the present species, and the same number (sixteen) of 

 costal plictB. For the present therefore I refer it as a subspecies. I have 

 seen live specimens, which agree in every particular; one in the Museum 

 of the Essex Institute in a bottle with the common varieties of the P. 

 erythronotus, the Spelerjyes hiUneatus, and Desmognathus, all from Es- 

 sex County, Mass., and four specimens in the Museum of the Smithson- 

 ian as follows : 



Plethodon eryilironotus dorsalis Baird. 



Catalogue 

 number 



3776 



No. of 

 spec. 



Locality. 



Louisville, Ky . 



"When 

 collected. 



From whom received. 



Nature of speci- 

 men. 



Habits. — The Plethodon cinereus is the most abundant salamander in 

 the northern and central eastern United States. It is of terrestrial 

 habits, and is easily found under logs and their bark, stones, etc. It 

 feeds, like other species, on insects and their larvte, capturing them by 

 applying to their surface its flat and projectile tongue and jerking 

 them quickly into its mouth. It frequently climbs to the summit of 

 low vegetation, from which it springs by a sudden straightening or 

 curvature of the body, as the case may be, in the manner of a cater- 

 pillar. 



PLETHODON GLUTINOSUS Green.* 



Tschudi, Batr., p. 92 ; Cope, Proc. Ac. Phlla., 1869, p. 100 ; Strauch, Salam., 

 p. 70; Boalenger, Cat. Batr. Grad. Brit. Mus., ed. ii, 18S2, p. 5G. 



Salamandra gluUnosa,GveeQ, Jonru. Ac. Phila., i, p. 357; Holbr., N. A. Herp., v, p. 



39, PI. 10; De Kay, N. Y. Faim. Rept., p. 81, PI. 17, p. 42. 

 Salamandra variolata, Gilliaras, Joiirn. Ac. Phila., i, p. 460. 

 Salamandra cylindracea, Harlan, Jouru. Ac. Phila., v, p. 156. 

 Plethodon ghitinosum, Gray, Cat. Batr. Grad. Brit. Mus., ed. i, p. 39. 

 Triton porphijriticKS, De Kay, N. Y. Faun., Ropt., p. 83, PJ. 16, fig. 37. 

 Cylindrosoma glutinosum, Dum. & Bibr., ix, p. 80. 



This species is of a stout form, the body depressed, the head, body, 

 and tail continuous, with very slight constriction at the neck ; the tail 



* Plates 26; 31, fig. 6; 35, fig. 2; 40, fig. 4 ; 45, fig. 5; 48, fig. 14. 



