370 



W. C. Mcintosh, 



s Welling, united to tlie first ray of the fin and representing* tlie anal 

 Papilla« K This would scarcely siiffice for the structure of the parts, 

 for the vent is one of the most characteristic aniongst Teleostomi 

 — formiug a firm and deep dimple surrounded by a coniplex series 

 of radiating fnrrows — often symnietrically arranged. Moreover 

 the Space between it and the first ray of the anal fin is greater 

 than in the female. Behind the vent, and separated by a brief 

 interval, is the cylindrical genital papilla which projects freely, and 

 which has a circiüar terminal aperture, or it may be two (each sur- 

 rounded by pigment). Another short interval occurs between this 

 and a second papilla which lies at the base of the triangulär Aap 

 marking the first ray of the anal fin, and it is to this the Scandi- 

 navian authors refer. The Ureters apparently lead to the aperture 

 at the tip. In this sex the white tips of the anal fin with the 

 dark bar below seem to be more conspicuous than in the female. 

 Further, the anterior rays of the anal fin are considerably shorter and 

 also broader at the base than in the female. The first ray, indeed, 

 forms a shoii;, conical (or triangulär) flattened process to which the 

 urinary papilla is attached. Attention has already been drawn^ to 

 the almost reptilian or amphibian character of the outline of the testes. 



In confinement the eggs were generally deposited during the 

 night either on the bottom of the glass vessel or towards the bottom of 

 the vertical wall. They adhered so firmly that they could not be removed 

 without rupture. The eggs are golden with yellowish pigment, and each 

 has a faintly pinkish disc for attachment, viewed from above (Plate XXI, 

 figs. 1 andlÄ) each egg is circular in outline with a distinct hyaline 

 zona, the contents (yolk) being dull pinkish or faintly salmon-coloured, 

 though in certain lights the yolk has a dull brownish appearance. The 

 tints are enlivened by a series of bright yellow granules and glob- 

 ules of oil (fig. 1). The diameter of the egg in this position ranges 

 from 1.1811 mm (.0465 in.) to 1.2192 mm (.048 in.). In lateral view 

 (Plate XXI, figs. 2 and 2 Ä] the egg forms an oblate spheroid, that 

 is, a sphere flattened at the poles, the vertical diameter being only 

 about .7630 mm, whilst that of the pale pinkish rim beneath is 

 .3048 mm. By transmitted light the eggs have a faint pinkish hue, 

 the minute oil-globules, which vary much in size, forming streaks 

 and groups without definite arrangement. On rupture of the egg 



^ Scand. Fislies, Fries, Ekström and Sunde vall. Vol. I. p. 215. 

 - British Marine Food-Fislies, McIntosh and MA.STER:srAN. p. 207. 



