416 Deep-sea Trawling off the 8.W. Coast of Ireland : 



broader anterior portion con- 

 taining the body of the em- 

 bryo, and gradually tapering 

 into a styliform posterior 

 portion for the reception of 

 the tail. The anterior por- 

 tion is of an elongate ovate 

 shape, a little broader in its 

 dorso- ventral* diameter than 

 in the transverse. Ante- 

 riorly the capsule is flat- 

 tened and truncate, open in 

 front as well as on the sides, 

 but the two flaps fitting 

 closely into each other, so 

 that nothing but water is 

 admitted. The styliform 

 portion is provided with four 

 narrow ridges, of which the 

 strongest is that of the right 

 side, extending nearly from 

 one end of the capsule to 

 the other, whilst the corre- 

 sponding ridge of the left 

 side disappears on the broad 

 portion of the capsule. The 

 dorsal and ventral ridges 

 are much thinner, fragile, 

 and show a rayed structure. 

 The outer surface of the 

 capsule is perfectly smooth. 

 The discovery of this egg- 

 capsule has enabled me also 

 to determine a similar object 

 from Japan which has been 

 in my possession for several 

 years. In shape it agrees 

 entirely with the Atlantic 

 form, but it is considerably 

 larger, measuring 9 inches, 

 and has its surface finely 

 ribbed longitudinally and 



* This term is used in relation 

 to the position of the embryo 

 within the capsule, which, on 

 opening the broad face of the &g^ 

 in Callorhynckus as well as in 

 Chimcera, is found to lie on its 

 side. 



o and b, transverse sections at the 

 places indicated by a cross ( x ). 



