196 HIALMAR RENDAHL 



and uniserial. Opercle with two spines, subopercle with one 

 spine. Oral tentacles moderate, those of the distal end of the 

 maxillary the largest; no frontonasal tentacles; two supraciliary 

 tentacles, the posterior the longest, about V2 eye-diameter. Be- 

 tween the two supraciliary tentacles, there is in some specimens 

 a small trace of a third tentacle. 



Body depressed anteriorly, without scales. Axillary pore 

 small. Three lateral lines, each pore with a very small, bifid 

 cutaneous appendage. Those of the middle line correspond to 

 each third of the appendages of the upper line. 



Color in spirits: Below pale yellowish brown, rest of head 

 an body light brown banded with darker brown. The bands on 

 the body are vertically arranged and about five in number, they 

 are broad, very indistinctly limited and partly confluent, giving 

 the body-color a marble appearance. They extend on to the dor- 

 sal and anal fins. From above the upper end of the basis of 

 the pectoral fin, there runs a dark brown band along the upper 

 lateral line to a level with the second dorsal fin. On the head, 

 the most distinct color marking is a dark brown band connecting 

 the anterior halves of the eyes. From the opposite lower-posterior 

 part of the eyes, there runs a similar band over a part of the 

 praeopercle. A second bar crosses the head over the vertex and 

 a third over the occiput. With age, the coloring becomes still 

 more marbly and variegated, the anterior head bar, however, seems 

 always to be rather distinct. Caudal and pectoral fins with more 

 or less continous dark brown cross-bands, the latter fin with a 

 distinct, quadrangular spot of dark brown color in the middle of 

 its basal part. Ventrals of the same color as the lower parts of 

 the body, but with traces of some narrow cross-bars. 



Echeneis na^ucrates Lin. 

 Locality: Roebuck Bay . . . One specimen, 113 mm. 



Pla,tycepha.lus indiens Lm. 

 Locality: Roebuck Bay . . . Two specimens, 290and 248 mm. 



