THE EUBTPHARYNX. 175 



Ladoplirys trigomis, is a West Indian fish; one specimen 

 has appeared at Holmes^ Hole, Mass. The porcnpine-flsh 

 {Chilichthys turgidus) and smooth puffer {Teirodon Iceviga- 

 tus) and the spring box-fish (Cliilomycterus geometricus) 

 range from Cape Cod to Florida. The sun-fish {Mola ro- 

 tunda, Fig. 221) is, like the others of the order, a surface- 

 swimmer. It is sometimes a metre or more in length, 

 weighing five hundred pounds or more. 



A A'ery strange fish of unknown affinities is the Eury- 

 'pharynx (Fig. 223), which was dredged in the Mediterra- 

 nean Sea at a depth of 2300 metres (1200 fathoms). It is 



Fig. 'iSSi.—Euryphai-ynx pelecanoides. From Liltken. 



.47 metres (18 inches) long, with an enormous mouth; it 

 is without fins, and it differs from all other bony fishes in 

 having six pairs of internal branchial slits and consequently 

 five pairs of gills. 



Class V. — Bateachia {Salamanders, Toads, and Frogs). 



General Characters of Batrachians. — We now come to 

 air-breathing vertebrates, with legs and lungs, and with ribs. 

 The Amphibians, with the exception of the toads and frogs, 

 are often mistaken for lizards, but the skin is always 

 smooth, not scaled as in true reptiles, and the toes are not 

 provided with claws. These animals are called Amphibians 



