NO. 4 MYERS AND WADE : NEW GENERA AND SPECIES OF EELS 85 



lb. Tip of tail sharply pointed and hard, with no evidence of fin rays. 



3a. About fifty narrow, yellow lines over back and down the sides ; 



a 5^ellowish band over mid-part of head (Galapagos, Cocos 



Island, Panama, Colombia). . . . U. galapagensis Seale. 



3b. Dorsally plain brown ; ventrally freckled with brown spots on 



a lighter background (Gulf of California) 



U. necturus (Jordan and Gilbert). 



Uropteryglus polystictus, new species 

 Plate 15 



Holotype. — AHF no. 16. 



Type locality. — Station 793-38, South Seymour Island, Galapagos, 

 collected in tidepool with derris root, January 20, 1938. 



Paratype. — One specimen, 185 mm., Station 811-38, Barrington 

 Island, Galapagos, taken from a coral head, January 26, 1938. 



Measurements of holotype in mm. — Length 321, head and trunk 165, 

 tail 156, head 36, snout 5.5, eye 3, cleft of mouth 11.5, body depth 23, 

 greatest width of head 18.5, greatest depth of head 21. 



Description. — Body rounded anteriorly, the tail becoming compressed 

 posteriorly ; skin much wrinkled. Head and trunk longer than tail, which 

 is 1.06 in their length. Depth of body 13.3 in total length; head 9.11 in 

 total length. Eye 12 in head, 1.83 in snout. Snout 6.54 in head. Cleft of 

 mouth 3.05 in head. Width of head 1.94 in its length, 1.16 in depth of 

 head. Head anteriorly broad and heavy, especially in cross section at angle 

 of jaws. Eye nearer tip of snout than angle of jaws, less than two in 

 snout. Anterior and posterior nostrils tubular, tubes of the posterior nos- 

 trils equal in length to the tubes of the anterior nostrils, both equal half 

 eye diameter. They are above the eye, but in advance of its center. Gill 

 openings porelike, directed upward and backward, slightly smaller than 

 diameter of eye, inserted at mid-depth of sides. 



Maxillary teeth in two series. Outer series of about twenty to twenty- 

 one small, close-set, pointed, slightly recurved teeth on each side. Inner 

 series of large depressible canines, about eight on a side. Both rows con- 

 tinued around the tip of the jaw. Premaxillary teeth arranged in two 

 triangles, the anterior the smaller with its apex toward the symphysis of 

 the jaw, the posterior with apex toward the vomer, and their bases lying 

 almost together. An enlarged tooth at each of the corners of the two tri- 

 angles. Vomerine teeth about five in number, in a single series, all of 



