BALISTIDiE. 



CEPHALINiE. 



329 



4. SuBFAM. DIODONIN^. 



Teeth none ; cutting margins of one or both of the jaws 

 entire ; body more or less orbicular, and armed with 

 spines. 



DioDON Linn, Both / {jJJ^^^ - '^^^ 



jaws with the margins 

 undivided ; body co- 

 vered with spines, 

 D. histrix. Bloch, pi. 125. ^, ^^. — v~^_v^ 



Triodon Cuv, Upper ' 'MM'sxt^j^^r^ 



jaw divided at the margin into the appearance of teeth? 



lower entire ; belly forming an enormous bag ; body 



rough, as in Tetraodon, particularly on the belly. 



T. bursarius. Reinw. Less. Atlas, pi. 4. (Vol. I. p. 197. fig. 32. ) 



5. SuBFAM. CEPHALIN^. Sun-fish. 



Body oval or orbicular ; the dorsal, caudal, and ven- 

 tral fins united. 



Pedalion Guilding MSS. Body rough, sub-ovate ; 

 mouth very small; jaws acuminated ; a six-lob sa- 

 cral appendage serving instead of a caudal fin, and 

 disconnected to the dorsal and ventral fins ; pectoral 

 fins short, rounded ; eyes versatile, as in Syngnathus. 

 P. gigas. Guild. (Vol. I. p. 199. fig. 33.) 



Orthagoriscus Sch. (^fig. 

 107.) Body nearly or- 

 bicular j the skin rough, 

 but without spines or 

 compartments. 

 O. mola. Bloch, pi. 128. 



Molacanthus Sw. Body armed with spines. 

 M. Pallasii Sw. Pall. Spec. Zool. pi. 4. 



Cephalus Shaw, Pectoral fin lengthened, pointed ; 



