138 



may be useful for identification purposes. There was no yellow 

 pigment present, and the black pigment (Plate VII, fig. 41) was 

 arranged as follows: Branching cells on snout, crown, behind 

 eye, over part of yolk sac and the body adjacent to it ; dense 

 tufts, three above and two below the body posterior to the 

 rectum. The oil globule was covered by a network of black 

 cells. The notochord was multicolumnar and the anus anterior. 



SPECIES XV. 



Eight ova were procured in a surface tow-net on the 2nd July, 

 1903, Cape Pohit, bearing N.E. by E., 38 miles. The}- were 

 I '87 mm. in diameter, with an oil globule from "38 to '42 mm. 

 They contained embryos fairly advanced, with tail slightly free, 

 and were about half the circumference of the egg. The yolk 

 was transparent and homogeneous, except for some clear dots 

 over its surface, which may not however be constant. The 

 embryo at this stage showed the following pigment patches of 

 a greenish yellow colour : a patch behind each eye, a fainter 

 tract along each side of the body, on the caudal region and 

 oil globule. On the 26th, all the eggs had sunk to the bottom 

 of the jar. They lived till the 31st, but were not in a healthy 

 condition, and did not hatch out. Another lot, about 60 in 

 number, was procured on the 17th September, Cape Point, bear- 

 ing N.E. (approx.) 40 miles, and hatched out satisfactorily. The 

 lar\^a (Plate VII, fig. 42) is long (4' 8 mm.), the rectum anterior, 

 and the notochord multicolumnar. The pigment is arranged 

 as follows : Yellow patches round eyes, on hinder part of yolk 

 sac and oil globule, yellow tufts above and below body and 

 extending on to fins. The arrangement of these tufts varied 

 somewhat in the different larvae. The following were constant : 

 One above the body a little behind the rectum, one below body 

 about as far again behind it, another between the second and the 

 end of the tail, and two at the end of the body. The variation 

 occurred in the addition of another yellow tuft, sometimes above 

 and sometimes below the body, near the third above mentioned. 

 The eggs were procured in surface tow nettings as follows : — 



Kef. \o. 



Localitv. 



Procured. 



Date. 



17161 ! Cape Point, N.E. by E. 38 miles. S July 23rd, 1903. 



17230 : Cape Point, E. i N. 25 miles. 5 July 30th. 1903. 



18053 I Cape Point, X.E. appro.x. 40 miles i 60 Sept. i/tli, 1903. 



17414 j Cape P'jint, E. i N. 34.I miles. t 4 .\u.u. 20th, 1903. 



