90 ON REPTILES COLLECTED NEAR GUAYAQUIL, ECUADOR. 



LEPTODEIRA ANNULATA Linn. ; Fitz. 



Considerable individual variations are shown by the 

 eleven specimens in the collection. Six have 21 dorsal 

 rows; five have 23. The scutes range from 185 to 194, 

 averaging about 189. The average of the subcaudals is 

 nearly 82, the range being from 72 to 90. The normal 

 number of labials is eight, on one side of each of two speci- 

 mens there are nine. There are ten infralabials ; on both 

 sides of one specimen and on one side of each of two others 

 there are eleven. Normally there are two ante- and two 

 postorbitals, and the fourth and fifth labials enter the or- 

 bital ring. On one side of one specimen there is a single 

 anteorbital and the third, fourth and fifth labials enter the 

 orbit ; and on both sides of another there are three postor- 

 bitals, while on one side of the same specimen there are 

 three anteorbitals. The dorsal blotches vary from 40 to 54 

 on the body, averaging about 45 ; and those on the tail range 

 from 17 to 25, with an average of about 22. On some 

 the dorsal blotches are transverse, undivided on the median 

 line ; on others they seem to be divided above the vertebrae 

 and alternated and joined in such a manner as to form a 

 sinuous line, crossing back and forth from side to side of 

 the dorsum for a considerable extent of the entire length. 

 In young stages the ground color is much lighter and the 

 spots are more distinct. The scales have two pores ; anal 

 and subcaudal scutes are divided. 



HERPETODRYAS BRUNNEUS Gthr. 



Eows 17, pores 2, scutes 155-f-122, and 1 54 -f- 131, anal 

 and subcaudals divided ; labials 9, iufralabials 10, a loreal, 

 one anteorbital, postorbitals 2, three on one side of one 

 specimen, fourth to sixth labials in the orbital ring. The 

 length of one is 11J+6|, and of the other 19-fl3 

 inches. 



