214 



internally. Embryo with deciduous external gills. 

 Males with prehensile organs attached to the ven- 

 tral fins." 



Order I. HOLOCEPHALA. 



" One external gill-opening only, covered by a 

 fold of the skin, which encloses a rudimentary car- 

 tilaginous gill-cover; four branchial clefts within 

 the gill-cavity. The maxillary and palatal appa- 

 ratus coalescent with the skull." 



CHIM^ERID^E. 



" Form of the body elongate ; pectoral fins free ; 

 anterior dorsal fin above the pectorals. Mouth in- 

 ferior. Dental organs confluent into two pairs of 

 laminae in the upper jaw and into one pair in the 

 lower. No spiracles. Males with a peculiar pre- 

 hensile organ in the upper part of the snout. Skin 

 naked in the adult." 



CALLORHYNCHITS. 



Formed by Q-ronovius on a most curious fish, whose rounded 

 head has a snout ended in a cutaneous flap. 



CALLOEHTNCHUS AWTAKCTICUS. 



Chimsera Callorhynchus, Lin. Syst. Nat., vol. i., p. 402. 

 Callorhynchus Antarcticus, Guv., Beg. Anim., vol. ii., p. 372. 

 Callorhynchus Tasinanius, Richard., Trans. Zool. Society, 

 vol. iii., p. 696. 



{Southern Chimera?) 

 This singular fish is common at the Cape of Good Hope, 

 but appears very scarce in the Victorian sea, as I have only 



