88 Proceedings of the Biological Society of Washington. 



angle, in one to meet them at right angles. Parasphenoid patches well 

 separated, nearly parallel, not approximated in front. Head flatter and 

 broader than in montanus, its width contained 4.8 to 5.6 times in length 

 to groin. Tail from groin less than one-half the total length. Form 

 rather short and stout. Sixteen specimens from Raleigh examined, 

 eleven of which were measured and examined for dental characters. 



Spelerpes montanus. Upper parts with thinly or thickly scattered 

 round black spots, these never confluent anywhere, and few in number 

 or absent on snout and top of head. Under parts with or without large 

 or small black spots or dots, ground color darker red, less orange than in 

 ruber. Edges of lower jaw often immaculate in small specimens, usually 

 more or less heavily spotted or clouded with black in adults. Palatine 

 teeth meeting parasphenoids at right angles in about one-half of the speci- 

 mens, gently curving backward from in front, to meet them without 

 evident angle in the other half. Parasphenoids approximated closely in 

 front and in most specimens divergent behind. Head higher and more 

 arched, particularly back of the eyes, its width contained 5.7 to 7.1 times 

 in length to groin, in fifteen of the specimens measured, in the sixteenth 

 5 times in length to groin, this last being an unusually short and stout 

 specimen. Tail from groin often one-half total length. Form both of 

 tail and body comparatively long and slender. To this form belong my 

 figures of "ruber," in the plate accompanying my description of Spelerpes 

 schencki (Proc. Biol. Soc. Wash., 1912, pp. 135-140). Number of speci- 

 mens examined 112, all from Raleigh, N. C, of which number 16 were 

 measured and examined for dental characters. 



Both ruber and montanus acquire with age a uniform purplish salmon 

 color above which wholly or partially suppresses the markings of the 

 dorsal surface. 



