EXPLANATION OF FIGURES. 403 
Ambystoma tigrinum. 
Pl. 6 in Rep. 1906, from Holbrook (Ed. 2, V, 1842, Pl. 26). 
Figs. in Rep. 1906, p. 47, from Cope (p. 68, fig. 12). 
Ambystoma jeffersonianum. 
Pl. 7 in Rep. 1906, from Holbrook (Eid. 2, V, 1842, Pl. 14). 
Figs. in Rep. 1906, p. 51, from Cope (p. 91, fig. 15). 
Hemidactylium scutatum. 
Pl. 8 in Rep. 1906, original, from an example obtained at Swartzwood Lake, 
Warren County. S. N. Rhoads. 
Figs. in Rep. 1906, p. 52, from Cope (p. 131, fig. 29). 
Plethodon erythronotus. 
Pl. 9 in Rep. 1906, original, from an example obtained at Kinkora Creek, 
Burlington County, by Dr. C. C. Abbott, T. D. Keim and H. W. Fowler. 
Figs. in Rep. 1906, p. 55, from Cope (p. 136, fig. 30). 
Plethodon glutinosus. 
Pl. 10 in Rep. 1906, from Holbrook (Ed. 2, V, 1842, Pl. 10). 
Figs. in Rep. 1906, p. 60, from Cope (p. 141, fig. 31). 
Gyrinophilus porphyriticus. 
Pl. 11 in Rep. 1906, from Holbrook (Ed. 2, V, 1842, Pl. 28). 
Figs. in Rep. 1906, p. 62, from Cope (p. 156, fig. 37). 
Spelerpes bislineatus. 
Pl. 12 in Rep. 1906, from Holbrook (Ed. 2, V, 1842, Pl. 16). 
Figs. in Rep. 1906, p. 64, from Cope (p. 166, fig. 40). 
Spelerpes longicauda. 
Pl. 13 in Rep. 1906, from Holbrook (Ed. 2, V, 1842, Pl. 19). 
Figs. in Rep. 1906, p. 67, from Cope (169, fig. 41). 
Spelerpes ruber. 
Pl. 14 in Rep. 1906, original, from an example obtained at Bacon Hill, Cecil 
County, Md., February th, 1907, by A. H. Grosh and H. W. Fowler. 
Figs. in Rep. 1906, p. 70, from Cope (p. 174, fig. 43). 
Figs. in Rep. 1906, p. 72, from Holbrook (Ed. 2, V, 1842, Pl. 319). 
Desmognathus fusca. F 
Pl. 15 in Rep. 1906, original, from examples obtained at Gold, Potter 
County, Pa., June of 1906, by T. D. Keim and H. W. Fowler. (Published 
previously in Proc. Acad. Nat. Sci. Phila., 1906, Pl. 13). 
Fig. in Rep. 1906, p. 75, from Cope (p. 195, fig. 48). 
