22,6 Taylor: Herpetological Fauna, III 543 



from Basilan, save that several of the Zamboanga specimens 

 (Nos. 1078, 1079A, 1095, 1096) have the preocular broken into 

 two parts, and a few have a single anterior temporal. Nos. 

 1079A and 1045 from Zamboanga and Nos. 1379 and 1586 from 

 Basilan have single anterior temporals. One or two more spec- 

 imens show this character on one side only. The largest and 

 smallest among twenty-one specimens in the collection measure 

 as follows : No. 1097, Zamboanga, total length, 560 millimeters ; 

 tail, 170. No. 1101, Zamboanga, total length, 149 millimeters ; 

 tail, 41. Variations in color and markings are due chiefly to 

 age. This is the smallest Natrix in the Philippines. 

 Cyclocorus nuchalis sp. nov. Plate 3, figs. 1, 2. 



Type.—No. 1428, E. H. Taylor collection; collected at Pasa- 

 nanka, Zamboanga, September 30, 1920, by Edward H. Taylor. 



Description of type.— (Male.) Rostral very much broader 

 than high, not or very narrowly visible from above; internasals 

 small, broader than long; prefrontals moderately large, in con- 

 tact for at least three-fourths of their length, rounded behind, 

 much broader than long; frontal shield-shaped, the sides nearly 

 parallel, twice as long as wide, only slightly wider than supra- 

 ocular; parietals one and one-fourth times as long as wide, 

 touching both postoculars and bordered by three temporals 

 their mutual suture equal to the length of the frontal; nasal 

 apparently partially divided on one side, wholly on the other; 

 loreal very small, slightly larger than lower preocular; two 

 preoculars, the upper three times as large as the lower; two 

 postoculars subequal in size; one anterior temporal, followed 

 by two, then three temporals; seven supralabials, third and 

 fourth entering orbit; diameter of eye distinctly greater than 

 distance of eye to edge of mouth; eight lower labials, last very 

 small, the three anterior ones touching anterior chin shields; 

 posterior chin shields longer than anterior, in contact the greater 

 part of their length; scales in seventeen rows without or 

 with only very dim apical pits; ventrals, 133; anal, single; 

 subcaudals, 58. L £ , , , , 



Color in life.— Dull brownish on anterior part of body dark 

 black-brown on posterior part. A median black stripe begins 

 on neck and continues to tip of tail, very dimly evident _on 

 anterior part of body; a broad black spot on ne ck beginning 

 three scales behind parietals; on the latter third of body and 

 tail a black stripe on either side, not or but dimly visible -jn 

 middle third; head with a black parietal spot which connects 



