HERPETOLOGY OF PORTO RICO. 693 



nasal and loreal; loreal large, longer than liigii and in contact with 

 nasal, ])c>th prefrontals, prcocular and second, third, fourth, and fifth 

 supralabials; a large preocular with a suhpreocular consisting of the 

 detached upper half of sixth supralabial; seventh supralahial reaches 

 eye; eighth supralabial separated from eye b}- a small snbocular; no 

 labial pits; live postoculars; temporal scales small, somewhat larger 

 and more angular than the l)ody scales; 42 scales around the body; 

 259 ventrals; anal entire; 7!) subcaudals. 



The pattern of the upper side of the l)ody consists of two upper 

 (dorso-lateral) rows of spots, which almost everj^wdiere are connected 

 with each other across the back; the dorso-lateral spots, which extend 

 to the end of the tail, are of more irregular form than in E. f()rdli^ 

 their number varying between 51 and 57; on the sides of the bod}', 

 but not beyond the vent, there is a single row of rather large spots, 

 which frequently connect with those of the upper side so as to form 

 transverse bands; a rather indistinct postocular stripe seems to be a 

 continuation of the lateral scale row; on the head there are but traces 

 of markings except on the posterior part; the ground color of the 

 upper surfaces is a very light yellowash-brown in the young specimens, 

 the markings very dark ])rownish-black; in the older ones the ground 

 color is much darker, so as to make the markings less prominent. 

 (From Zenneck's original color description.) 



Dimensiotis {of No. 2034c). 



ttitn,. 



Total length 350 



Snout to vent 280 



A'ent to tip of tail 70 



The largest adult specimen (No. 2034b), with a defective tail, meas- 

 ures from snout to vent 1.010 m, 



Yarkit'ion. — According to Meerwarth the scale rows (in five speci- 

 mens) vary from 38 to43, the ventrals from 250 to 2r)t), and the caudals 

 (in two specimens) from 79 to 82. Four specimens have 13 suprala})ials 

 on both sides, one (No. 2034a) has 11 on one side, 13 on the other. 



Ilahiiat. — This form seems to be confined to Mona Isliuid. Not- 

 withstanding the fact that Bock collected five specimens for the museum 

 in Hamburg it can not be connnon there, for Mr. Bowdish, during 

 his visit to the island in 1901 failed to see a single one. In his letter 

 he assures me that it was entirely unknown to the few inhabitants now 

 living there. 



Remarks. — Never having seen a specimen of JE. fordil I shall pass 

 no opinion on the distinctness of E. moiiensis. The latter certainly 

 seems to have more scale rows (38 to 43 as against 33 to 37) and if 

 E. fordil always has one or more scales interpolated between the pos- 

 terior prefrontals as indicated 1)\' Zenneck's figures, the}' may be more 

 distinct than Meerwarth seems to admit, as he makes E. monensU a 

 variety of E. fordil. 



