DUNN: AMPHIBIA CAUDATA. 467 



71. PSEUDOTKITON RUBER SCHENCKI (Brilllley). 



N. C: Sunburst, 2,889.— Ga. : Tallulah Falls, 4,490; 4,491. 



This form of the higher southern Alleghanies intergrades with P. 

 ruber ruber both to the north and to the south. 



Specimens from Catawba Co., N. C, (1,381), and from Georgia, 

 (217), show how this is effected. The chief differences between P. 

 ruber ruber and P. ruber schencki are those of color. Briefly in the 

 former the black spots run together in the adult and the chin is not 

 black-white; in the latter the spots do not run together and the chin 

 is black. 



The intergrades to the east and north of Asheville, N. C, have the 

 clear coloration but lack the black chin. The intergrades to the south 

 have the black chin but the coloration is clouded. 



72. EuRYCEA LUCiFUGA Rafinesque. 



Ind.: White River, 4,276. — Ky.: Baker's Furnace, 1,110 (6); Bee Spring, 

 4,557 {larva); Diamond Cave near Glasgow Junction, 1,465; Dismal 

 Creek near Bee Spring, 4,496 (larva) ; Edmonson County, Haunted Cave, 

 1,464; 1,679 (2); Lexington, 2,271 (3 larvae).— Mo.: Jasper County, 

 Wilson's Cave, 2,269 (22 larvae); 2,270 (larva); 4,607, 4,608 (2 larvae); 

 Jefferson County, 2,778 (2); 3,147; Stone County, 2,540; Stone County, 

 Marble Cave, 2,550.— Ala., 225 (larva). 



Larvae of Eurycea are distinguished from those of Pseudotriton 

 and Gyrinophilus, which also have dark gills, by being noticeably 

 lighter on the dorsal surface than on the sides. They fall into three 

 groups, groups which are also evident in the relationships of the adults. 

 These are; — 1st E. lucifuga; 2d E. longicauda, cjuttolincata, and melano- 

 pleura {stejnegeri auct.); 3d E. bislineata and muUiplicata. 



Larvae of E. lucifuga show a resemblance to larvae of Pseudotriton 

 in that there is not so sharp a demarca,tion between the back and sides. 

 The upper series of larval areas are not so large as in the other species 

 and the back becomes light by gradual loss of pigment instead of an 

 enlargement of the areas. 



The lateral and lower series are not conspicuous, but the lower 

 series is present. The most noticeable feature of E. lucifuga larvae 

 i s a wide grayish stripe between the lateral and lower series of larval 

 areas. 



Larvae of E. guUolineata are distinct, owing to the prominence of the 



