270 



PISCES. 



Two of the genera, Tetraodon and Diodon, have the faculf v 

 of swelhng themselves up like a balloon, b/fi, " thd, s ' 

 mach or rathe,, a sort of very thin and extensib crop wh c 

 occup.es the whole length of the abdomen, and adhe es'Is! 

 to t le pento,,eun a circumstance which has occasioned^ ^ 



the ri :;:':: o7^ '^ ^^ "- pentoneu itsdf, andt : : 



tnci as a speces of epiploon, with air. When thus inflated 

 S: ;r','"'f ^' "" "- ^-f-e, with the Ibdo^en ut 



spiesih ,.'"""' P"'"'"" 'y "'^ ^'^"'""of the 

 spines with which their skin is everywhere furnished m 



Their natatory bladder has two lobes, and their kidnev, which 



ungs.(2) They have but three branchiae on each side,f3) and 



the ai rushing out of their stomach. Each of their nostril, 

 -s furnished with a double fleshy teutaculum. 



Diodon^ Lin. 



resemb e , Ik , "?' ''"'''' 'P'""' ">=" -^en inflated, the,- 



Some of them have Ion, spines supported by two lateral roots, 

 bette,, Seb., Ill, xxiu, 1, 2, ,s ,ore than a foot in diameter.(5) 



(1) See Geoffroy-St-Hilaire Poi";<; rTPo. ti 

 A sh^ila. di.spositio'n is obse;:b,erchi,ot'c;:s '"^^ ""' " ""^ ^""^^^- 



<ien,Lin syst Fd XII "' ^'"^^' '='^"-' ^l^' -d doubtless that of Gar- 



Bro^ssonnerAc dJss'rs'o Tas ' .T '" '^^""'^" ^^^"^ mentioned by 



rambles them The nro'clL f ^'^ ' ''" " "^'""^ * '^ ^""^ "'1^'^^ re- 



to that of others. ' '"''"'"" " ''^^^ '^'^^ ^^ ^^^'^^ - -" things 



(3) An instance of this we have already seen in Lophius. 



' T, n'T?^''''^^''''^'-'P^'" ^- "t uncommon. 



4 on, call u Ao^on pundatus,~KA^ Died, spinosisdmus, Cuv., Mem. 



