195 



Running ;iIong each side of the body are two rows of 

 bright yellow (by reflected light) spots, extending from the 

 pectoral to some distance behind the vent. Black pigment 

 spots occur in irregular longitudinal rows among the yellow 

 spots, also on the visceral region and the anal fin just behind 

 the vent (the only pigment on any of the lins). On the 

 following day these spots became stellate, and the whole 

 pigment appeared denser. 



SPECIES II. 



(.DEMERSAL.) 



Only on one occasion were samples of this egg procured. 

 They were dredged on the i8th November, 1902, in False Bay 

 (Zwart Rlip bearing North, t^ miles ; depth, 9 fms.). About 

 100 hatched out from 3 p.m. to 7 p.m. of the same day, but 

 died shortly afterwards. 



About 300 eggs were firmly fixed to the inside of a dead 

 barnacle shell. They were about i mm. in diameter, and the 

 adhesive membrane of one egg was slightly continuous with 

 those surrounding it (PI. II, fig. 21). They appeared as vivid dark 

 blue specks about the size of a pin's head. In some the eyes could 

 be discerned without a lens. Some eggs were not wholly blue 

 and opaque, and showed on one side numerous oil globules 

 occupying less than a half of the whole sphere. In others the 

 blue yolk mass occupied one half the sphere, and the two large 

 eyes, each a little under ^ the diameter of the egg, lay in the 

 other half with a clear yellow space between and on each 

 side of them, but posteriorly they touched the blue yolk. 

 A conspicuous feature was the heart of a reddish brown colour 

 situated in a notch in the margin of the blye yolk between the 

 eyes. In all the photographs taken an arborescent series of 

 vessels was revealed radiating from the heart through the 

 yolk. Nothing of this could be discovered in viewing the yolk 

 through the microscope, and that it appeared in the photograph 

 was probably due to the less actinic character of the yellow 

 light from the blood. The circulation of the blood could be 

 seen very distinct. y at the margin of the hemisphere to the left 

 of the embryo. It was very active, and the heart beat 104 to 

 the minute. 



The newly hatched larva ( PI. II, lig. 22) is very lively, much more 

 so than that of Sp. I. The yolk is comparatively small, its anterior 

 end being behind the posterior margin of the eye. Five branchial 

 arches and the mandible of the lower jaw were well developed ; 



