148 



pinnis dorsali analique a caudali diicrelk : latere dextro Jtaves- 

 cente, Juscescente vario ; pinna pectorali deitrdad apicem macula 

 parva nigrd notatd. 

 Tetrodon guttifer. Tetr. oblongus, Icevis ; ventre aculeato- 

 hispido ; pinnis pectoralibus postice subrohmdatis ; dorsali ana- 

 lique rotundato-acutis ; caudali lunatd; dentibus superioribus 

 antice parum elevatis : suprh olivaceo'brunneus albo guttatus; 

 iiifra lacteus. 

 D. U. A. 10. P. 21. 

 Carcharias fissidens. Carch. dentibus triangularibus, singulis 

 versus angidum oris profunde emarginatis, incisiira acutd ; pinnd 

 dorsali 2dd supra analis medium incipiente. 

 Figūra dentium apud LaCėpede, Hist. Nat. des Poiss., tom. i. p/. viii. 



f. 2. 

 The single notch on each tooth on the side directed towards the 

 angle of the mouth is so deep and acute as to give to the teeth, 

 when viewed from the side, a close resemblance to so many arrow- 

 heads. 



Raia bispecularis. Rata supeme aspera, acideis dorsalibus in 



unicd serie per caudam excurrente: Jusca, macula pinnce pectora- 



lis rotundd hyalinu nigro-cincta, 



Affinis, ut videtur, Raiee Miralete, Risso : differt corpore toto 



supernė aspero^ caudaeque aculeis uni-seriatis. Specitnen minimum, 



2-unciale. 



Among the previously described species contained in the coUec- 

 tion was a specimen of ScyUium marmoratum, Benn., (Memoirs of 

 Sir T. Stamford Raffles, Appendix) hitherto only known as an in- 

 habitant of the Indian seas. 



