HERPETOLOGY OF PORTO RICO. 693 



nasal and loreal; Loreal large, longer than high and in contact with 

 nasal, both prefrontals, preocular and second, third, fourth, and fifth 

 supralabials ; a large preocular with a subpreocular consisting- of the 

 detached upper half of sixth supralabial; seventh supralahial reaches 

 eve; eighth supralabial separated from eye by a small subocular; no 

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

 and more angular than the I tody scales; 42 scales around the body; 

 259 ventrals; anal entire; 7l> subcaudals. 



The pattern of the upper side of the body consists of two upper 

 (dorso-lateral) rows of spots, which almost everywhere 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. fordii^ 

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

 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 yellowish-brown in the }'oung specimens, 

 the markings very dark brownish-black; in the older ones the ground 

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

 (From Zenneck's original color description.) 



Dimensions (of No. 2034c). 



mm. 



Total length 350 



Snout to vent 280 



Vent to tip of tail TO 



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

 ures from snout to vent 1.010 m. 



Variation. — According to Meerwarth the scale rows (in five speci- 

 mens) vary from 38 to 13, the ventrals from 259 to 266, and the caudals 

 (in two specimens) from 70 to 82. Four specimens have 18 supralabials 

 on both sides, one (No. 2031a) has 11 on one side, 13 on the other. 



Habitat. — This form seems to be confined to Mona Island. Not- 

 withstanding the fact that Bock collected five specimens for the museum 

 in Hamburg it can not be common 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 E. fordii I shall pass 

 no opinion on the distinctness of K. monensis. The latter certainly 

 seems to have more scale rows (88 to 13 as against 33 to 37) and if 

 /.'. fordii always has one or more scales interpolated between the pos- 

 terior prefrontals as indicated by Zenneck's figures, they may be more 

 distinct than Meerwarth seems to admit, as he makes K. monensis a 

 variety of K. fordii. 



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