AMPHIBIA. 23d 



fins united beneath on the throat to a transverse disk 

 or plate ; ventral fins united to a second semicircular 

 plate, whose concavity is turned upwards towards the 

 head_, and furnished with cup-shaped suckers ; dorsal 

 fin opposite the anal ; vent nearest to the tail ; teeth 

 sharp, in different rows, the anterior longest ; caudal 

 fin emarginate/' 



P. adherens, Raf. Carat, p. 63. 



RupisnoA Sw. General structure of the last, but the 

 caudal, dorsal, and anal fins are united. 



L. nicensis Sw. Risso, pi. 4. fig. 10. 



GoBiEsox Lac. Branchial aperture rather larger ; ven- 

 tral disk one ; dorsal and anal fins short, and distinct 

 from the caudal. 



G. bimaculatus. Perm. Brit. Zool. pi. 22. fig. 1. 



Cyclopterus Linn. Body short, thick, viscous, with 

 out scales, but with rows of thick conical tubercles ; 

 branchial aperture very small ; dorsal fin one, corre- 

 sponding to the anal ; pectorals large, almost uniting 

 under the throat, and with the ventrals, which form 

 an oval concave disk. 



C. Lumpus. Bloch, 90. 



LiPARis Artedi. Body smooth, lengthened, sub-an- 

 guilliform ; dorsal fin long, united to the base of the 

 caudal ; head thick ; tail compressed. 



L. ophidoides. Yarrell, B. Fish, ii. 274. 



CHAP. III. 



A NATURAL ARRANGEMENT OF THE CLASS AMPHIBIA, ACCORDING 



TO PROFESSOR BELL. 



Order. I. AMPHIPNEURA. 



Body elongate, formed for swunming ; feet either two 



z 2 



