368 



BULLETIN 17 7, UNITED STATES NATIONAL MUSEUM 



body; the first two scale rows white-edged on the neck and anterior 

 part of the body; upper labials, chin, and throat white, with a decided 

 pinkish tinge, very sparsely dotted with black; ventrals pale cream, 

 their outer ends tinged with bluish and with an occasional black spot. 



Variations. — In the paratype (No. 59439) the loreal is slightly 

 broader than high, and the second labial just misses contact with the 

 preocular. The pinkish color on the throat is very evident, and there 

 are a number of black spots scattered on the upper and lower labials, 

 continuing backward on the sides of the throat and on the ends of the 

 first 30 or 40 ventrals. In the type. No. 59440, the loreal is very 

 nearly square; otherwise the head scalation is exactly similar to that 

 of the described specimen. The light edges of the first two scale 

 rows are more prominent in the type and continue for a greater 

 distance along the body than in No. 59921. In the ventral count of 

 the 10 known specimens very little variation is shown. In all these 

 specimens the second and third labials, the loreal, and the preocular 

 meet in a point so that the second labial barely touches the preocular. 

 The posterior chin shields in aU are much longer than the anterior 

 ones and measure somewhat longer than their own distance from the 

 tip of the lower jaw. 



Specimens examined. — As listed in table 73. 



Table 73. — Specimens of Leimadophis parvifrons tortuganus examined 



LEIMADOPHIS PARVIFKONS ROSAMONDAE (Cochran) 



Figures 107, 114, UBd 



1934. Dromicus parvifrons rosamondae Cochran, Occ. Pap. Boston Soc. Nat. 

 Hist., vol. 8, p. 186. — Barbour, Bull. Mus. Comp. Zool., vol. 82, No. 2, 

 p. 161, 1937. 



Original description. — 



"Diagnosis. — Melanistic ui coloration, the dorso-lateral line being 

 reduced to a pale straight stripe through the middle of the sixth 



