58o 



Memoir Sears Foundation for Marine Research 



Table IV. Average Weights of Newfoundland Capelin at Different Total Lengths. f 



136 a-d) average 0.96-0.97 mm in diameter, are spherical, transparent, and of a 

 reddish or reddish yellow hue, and have a moderately broad perivitelline space. They 

 have no oil globule, though the yolk contains many minute globules that tend to unite 

 as development proceeds. The eggs sink and are so sticky that they cling to each other 

 or to anything on which they chance to come to rest. 



Jeffers has observed that incubation occupies 55 days at a temperature of o°C, 30 

 days at 5°C, and 15 days at io°C, with about 12° the upper maximum, though the eggs 

 may hatch in water as warm as i 5° and in salinity as low as 7 «/oo {46 [i 93 1] : 17, 18). 



-rirlt^l^- 



Figure 136. Mallotus villosus villosus. a-c, egg in segmentation stages, d, larva before hatching, e, newly- 

 hatched larva, 6 mm long, f, larva 9 mm long, c, larva 16 mm long, a-e, after Sleggs {lo6)\ f-g, after Temple- 

 man {no). 



