318 



CLASSIFICATION OF FISHES^ ETC. 



anal ; teeth long, pointed, with one lateral denticle or 



two on each side." 



Alopecias ]M. and H. " Head, dorsal, and anal fins^ and 

 spiracles as m Lanina, but the branchial openings are 

 small ; upper lobe of the caudal extremely elongated; 

 a dimple on the tail, but no lateral keel ; teeth sharp, 

 triangular, without serrature or protuberance, (l Sp.)" 



3. SuBFAii. ZYGAXIX.E. 

 Spiracles wanting ; head excessively dilated on each 

 side j eyes very remote, 



Zy GAN A Ant iq. {fig- 97-) Head hammer-shaped ; the 

 eyes placed at the two extremities. 



Z. laticeps Cantor.* (Vol. I. p. 134. fig. 11.) 



Platysquahis Sw. Head more or less heart-shaped; anal 

 fin placed opposite to the second dorsal. 

 S. tiburo Linn. Russ. pi. 12. fig. 2. 



4. ScBFAM. CROSSORHIN^. 

 Mouth terminal and almost vertical, surrounded with 

 strap-like cirri or lobes ; eyes placed close to the crown; 

 spiracles large. 



Crossorhixus M. and H. Dorsal fins two, placed 

 close to the caudal fin ; teeth acute. 



C. lobatus. (Vol. I. p. 143. fig. 15.) 



5. ScBFAM. PRISTINE. 

 Snout produced mto an osseous, flat, sword-shaped plate, 

 armed with spines on the sides ; mouth beneath. 



* Ouarterlv Medical Journal of Calcutta, No. 3., July, 1837. 



