CLASS CHONDRICHTHYES. CARTILAGINOUS FISHES 



377 



chimaeras. The latter (Fig. 251) are 

 grotesque-looking creatures named 

 after the fire-breathing monster of 

 Greek mythology. One olfactory sac; 

 gills covered by operculum; no spira- 

 cles or cloaca; adults nearly scale- 

 less. Ex. Chimaera (Fig. 251). 



SELECTED COLLATERAL 

 READINGS 



(See also Chapter 26) 



Daniel, J.F. The Elasmobranch Fishes. Univ. 

 of Cal. Press, Berkeley, 1934. 



