1912.] NATURAL SCIENCES OF PHILADELPHIA. 29 



rami rather low, symphyseal tip trifle shorter than snout tip. Front 

 nostril in short pale tube each side of snout tip. Hind nostril in 

 slightly elevated cutaneous rim above front eye edge. Inter- 

 orbital convex. 



Gill-opening inclined moderately, below median body axis, about 

 equals eye in length. Pharynx well swollen, though not conspicu- 

 ously so. 



Skin smooth, tough. Along each upper lip 5 pores. On snout 

 above 2 pairs of pores between front nasal tubes and another pair 

 placed about midway between front and hind pairs. Along each 

 mandibular ramus 5 pores. No 1. 1. 



Dorsal origin last § in space between hind eye edge and gill- 

 opening, fin well elevated and continuous around tail with small 

 rounded caudal. Latter about equals eye. Anal like dorsal, only 

 lower. Vent close before anal. 



Color in alcohol deep chocolate-brown generally, marked with 

 small white points, well scattered, numerous, rounded and none 

 larger than pupil. These white spots not extending on median line 

 of abdomen or head below. Labial pores of head each situated in a 

 white spot. Mouth corners and gill-openings pale or like surrounding 

 coloration. Inside mouth pale. Iris pale slaty. Whitish dots on 

 fins similar to those on body. 



Length 13| inches. 



Type No. 14,519, A. N. S. P. Probably from the Gulf of Cali- 

 fornia. 



Also No, 14,520, same data, paratype. Head 7|; depth 17^; 

 snout 5| in head ; eye 8 \ ; mouth 3 ; interorbital 8 ; head 4*- to vent. 

 Mouth completely closing. Anterior upper median enlarged teeth 

 depressible. Neither of my examples show the pale dots with 

 blackish margins. 



This species resembles Echidna nocturnus, but differs in the longer 

 anal. The example supposed to have been taken at Cape San 

 Lucas by Xantus, and referred to E. nocturnus by Jordan and Davis, 

 may probably be identical with the present species. 



(Xtwv, snow; <rriyij.a^ spot; with reference to the spotted coloration.) 



Echidna catenata (Bloch). 



Three from St. Martins, West Indies. Another, very young, 

 largely agrees with the largest in its dentition. In color many of 

 its bands are alternately irregular, so that but few nearly complete 

 saddle-like blotches form. Length 6 inches. 



