470 FISHES CHAP. 
The eggs appear to be deposited on the sea-bottom in deep water, 
but they are very rarely obtained. An egg-case dredged up off 
the south-west coast of Ireland, at a depth of 315 fathoms, and 
about 64 inches in length, is shown in Fig. 268.’ It consisted 
Fic. 268.—Ege-case of a species of Chimaera. «a, Transverse section across the case 
at a, showing the lateral valvular slits ; 6, similar section across 2’, showing the 
vertical ridges. (From Giinther.) 
of a broad, somewhat oval, flattened portion which contained the 
ego, and terminated at one end in a truncated margin, while at 
the other it was produced into a long tapering styliform process, 
traversed by dorsal, ventral, and lateral ridges. The cavity of 
Fic. 269.—Callorhynchus antarcticus. Male. A, lateral view ; B, front view of the 
mouth ; C, front view of nasal process. a.c, Anterior clasper; 0.a, external 
branchial aperture ; /.c, frontal clasper ; p.c, posterior clasper. (From a specimen 
in the Cambridge Museum. ) 
the egg-case was open in front, and also along each side, where 
linear, slit-like valvular apertures freely admitted sea-water into 
the central cavity. A similar egg-case from Japan, measuring 
9 inches in length, had its surface traversed by longitudinal and 
' Giinther, Ann. Mag. Nat. Hist. (6) iv. 1889, p. 415. 
