THE EGG-CAPSULE. 33 



men (or specimens) is much smaller in size. This difference, therefore, could hardly 

 prove a matter merely of age. Another capsule (Chilean), fig. 1 5 d, is again quite 

 unlike the specimen figured by Jaekel. It is almost a third larger in size, but nar- 



^5^ 15 



sC 



V 







s. 



■'^ »* 



^ 



Ut> 



Fig. 15 B. — Egg-capsule o( Callorhynchus. (Quoy and Galmard.) From Cape of Good Hope. 



(Ventral aspect.) One-half actual size. 

 Fig. 15 C. — Egg-capsule of Callothynchus. (Peron.) From Australia. (Ventral aspect.) 



One-hall actual size. 



rower proportionately. Its emphasized rugae arising from the opercular hinge are 

 more nearly transverse, and, unlike any other capsule of Callorhynchus known to the 

 writer, it presents a thick, opaque case, margined by a thin, transparent web. In 



