1915.] NATURAL SCIENCES OF PHILADELPHIA, 153 



concurrence (study of Diadophis in manuscript) — all force the 

 authors to consider this subspecies untenable. 



Habits. — This attractive snake was found during the day under 

 cover, usually under logs near the cypress edges of Billy's Island. 

 It seemed to prefer localities near the edge of the thicker woods. 

 In one case it was under a log in a place near and exactly similar to 

 the situation described for Haldea striatula. In the other instance, 

 the two were taken (June 11, 1912) under a log near Billy's Island 

 landing at the woody edge of cultivated fields. The D. a. stidogenys 

 specimen was first taken and a few minutes later the other specimen 

 was found under the same log. The former may have been seeking 

 -the sandy fields of the Lees where lizards, snakes and turtles resort 

 in great numbers to lay their eggs. This specimen had six unlaid 

 eggs which measured as follows: 18 x 9 mm., 19 x 9, 19 x 9, 20 x 9, 

 20 X 9, 21 x 10. The covering is thin and quite pinkish in alcohol. 

 This species seems as nocturnal in Okefinokee as our experiences 

 with it elsewhere suggest. These specimens had insect and worm 

 remains in their alimentary tracts. 



5. Heterodon platyrhinus Latreille: Hog-nosed Snake; Hog-nose; Spreading Adder; Spread- 

 ing Viper; Blowing Adder; Blow Snake; Blowing Viper; Spotted Adder; Flatheaded 

 Adder; Pufif Adder; Sand Viper; Black Viper. Plate III, fig. 7; fig. 6. 



Thirty-eight specimens were secured, of which 16 were young 

 snakes; one was a cast skin. 



Coloration. — In coloration our series show all possible patterns. 

 The 16 young were all of the spotted phase and manifested the 

 following pattern: The ground color may be yellowish, brownish 

 or reddish. Down the back is a series of 26-32 spots and on the 

 tail 7-9 spots which become transverse bands. The color around 

 these dorsal spots is brighter or lighter than the surrounding body 

 color. Alternating with and almost touching the corners of the 

 dorsal spots is a series of lateral spots. In the cephalic region, one 

 of these spots of each side with a pair of successive dorsal spots form 

 a quartette — an arrangement soon lost in the caudal part of the 

 body and seldom seen in adults. Beneath these spots may be seen 

 one or more series of small spots, not very distinct in form. The 

 venter is grayish or greenish-white, heavily blotched with black or 

 brownish. The head has a black bar connecting the upper anterior 

 edges of the orbits; another bar from the eye to the angle of the 

 mouth ; and a third, on occipital plates, posterior margins of supra- 

 orbitals and frontal. This black spot has a backward extension on 

 either side of the nape or neck and usually a small median extension 



