490 PLEUEOITECTID^. 



swollen in the lower haK and on the blind side. Snout falciform, 

 covering the symphysis of the mandibles ; lower lip with nine cilia. 

 Eyes on the right side, small, like points ; before them only .one 

 nostril in a large tube, which is fringed anteriorly. Pectorals none. 

 The right ventral extends from the chin to the anal, with which it 

 is united. The left ventral rudimentary. The vertical fins are not 

 distinct from the caudal, being similar in this respect to Synaptura. 

 All the rays simple. Gill-opening very narrow." 



The locality whence this fish has been obtained is not mentioned, 

 nor the species (^A. dumerilii) described. 



To this genus, perhaps, belongs Pleuronectes plagiusa, L. Syst. Nat. 

 i. p. 455, and Bl. Schn. p. 152. — South Carolina. 



31. AMMOPLEUROPS. 



Eyes on the left side ; pectorals none ; vertical fins confluent. 

 Scales ctenoid, deciduous, of moderate size ; one lateral line. Snout 

 short, with the upper portion not produced into a hook ; mouth 

 unsymmetrical, rather narrow ; teeth minute, on both sides. 



Mediterranean. 



1. Ammopleorops lacteus. 



Plagusia lactea, Bonap. Faun. Ital. Pesc. ; Costa, Faun. Nap. ii. p. 60. 

 tav. 50 ; Canestr. Arch. Zool. i. p. 43. tav. 4. fig. 3. 



D.-J-C. + A. 162-178. Y. 4. 



Two nostrils in front of the lower eye; lips not fringed. The 

 height of the body is4iW0-sevenths of the total length, the length of 

 the head nearly one-fifth. Uniform whitish ; vertical fins with some 

 spots along the base. 



Mediterranean. 



32. APHORISTIA. 



Plagusia, sp., Cuv. 



Aphoristia, Kaup in Wiegm. Arch. 1858, p. 106. 



Eyes on the left side ; pectorals none ; only the left ventral is 

 present ; vertical fins confluent. Scales -ctenoid, of moderate size ; 

 lateral line none. Snout short, with the upper portion not produced 

 into a hook ; mouth unsymmetrical, rather narrow ; teeth minute, 

 on the right side only. GiU-opening very narrow. 



Atlantic coasts of tropical America. 



1. Aphoristia omata. 



Brown, Jamaica, p. 445. no. 1. 



Achirus ornatus, Lacep. iv. pp. 659, 663. 



Plagusia omata, Cuv. Regne Anim. 



brasiliensis, Agass. in Spix, Pise. Bras. p. 89. tab. 50 ; Casteln. 



Anitn. Nour. Poiss. p. 79. pi, 41, fig. 2 (not good). 



