196 



notochord multicoliimiicir. The long' bodv is somewhat dark,- 

 and a few small black stellate cells appear on its ventral margin 

 near the end of the tail. In the abdominal region the remains of 

 the blue yolk occupy only about half the abdominal cavity, the 

 rest being filled up with the well developed intestine. Above 

 the intestinal mass is a tract of very dark blue pigment. There 

 is a large transparent pectoral fin extendmg upwards beyond 

 the dorsal margin of the body bv about ^ its length.* The 

 beginning of the dorsal* is situated behind the otocvst, being 

 separated from it by a space about equal t(^ its diameter. The 

 otocyst is very close to the eye. 



- The absence of pigment readily distinguishes it from 

 Species I, and a reference to the figures will show marked 

 dit¥erences in other respects, as for instance the anterior posi 

 tion of the anus. 



SPECIES III. n^f^ 



(PELAGIC.) 



„>^ 



About half-a-dozen unknown pelagic eggs were procured on 

 the 20th November, 1902, in a surface tow net in False Bay.. 

 They were very large (17 mm. in diameter), due chiefly to the 

 size of the perivitteline space, which was in breadth about ^ the 

 diameter of the yolk. The margin of the egg had a vivid 

 green tint. One oil globule was present, relatively small, being 

 only '2 mm. in diameter. The embryo shows a series of 

 small black stellate spots along the body from head to tail. 

 There are no pigment spots yellow by reflected light. The upper 

 part of the yolk next the embryo has a number of fine circular 

 lines throughout its substance. (Plate III., figs. 23 and 24.) 



Some were hatched out on the following dav. The larva can 

 be distinguished from others by the very elongated body 

 (4*1 mm.). Its movements are also characteristic. Instead of 

 the sharp wriggle of the tail there is a comparatively slow 

 undulation of the whole body. Though there are no yellow 

 pigment spots, by reflected light a golden tinge is apparent on 

 the upper margin of the body in the region of the otocyst, and 

 on the posterior margin of the yolk. There are minute black 

 dots on the upper part of the head, and these extend backwards 

 along the dorsal region of the bod}' to about the vertical from 

 the middle of the yolk, where also the dorsal fin commences 

 A few other dark spots occur here and there on the body. 

 The oil globule is slightly in front of the posterior angle of 

 the yolk. The notochord is unicolumnar and the anus is 

 situated in the posterior third of the body. i^Pl. III. fig. 25). 



* Not brought out clearly in photograph (Fig. 22), 



