103 



486. A similar specimen of the rostrum of the Prutu pertinatm. 



In this (peck* the rostrum is narrower in proportion to iU length than in thr Priittt a*t\ 

 7*on>M ; the teeth are longer aud more slender, and are from twenty-five to thirty-six cm 



each side. 



JfuHterian. 



4S7. The rostrum of a Saw-fish (Prittu ctupidattu). 



488. A similar specimen. M**. Brit. 



t-:i \ siinil ; s|)( . ::.. 11 



In the Prtttii eutjndalta the teeth are broad, flat, and lancet-formed ; and twenty-eight 

 on each tide. 



Huntcrian. 



490. The rostrum of the small-toothed Saw-fish (Priftit mierodon). Mut. Brit 



491. A similar specimen. Presetted by Sir WUlia* Blizard, F.R.S. 



492. A similar specimen. 



In the Pritlit mierodon the rostrum is long, and the teeth exceedingly short. The |ieci- 

 men to which thLt name was applied was but twenty-eight inches in length, and. most pro- 

 bably, immature ; when the shortness of the spines would be the consequence of their being 

 nearly concealed by a membrane that extends itself laterally on each side of the snout, some- 

 times even to the extremity of the spines ; this membrane disappears in the adult. 



lltutlerian. 



498. The rostrum of a young Saw-fish (Pritti* peclinattts). Hu*teriaii. 



494. The rostrum of a young Saw-fish (Pristi pectinattut). Ifimleria*. 



495. A dried specimen of the Print i* n'rro/#. 



In this specie* the rostral teeth vary in length, there being from three to fire smaller ones 

 interposed between the longer teeth ; these are sharp-pointed and slightly recurred ; their 

 base is expanded and excavated more deeply than in the common Saw-fish, and becomes 

 anrhy lotted to the walls of the alveolus. The rostral series of teeth extends backwards on 

 each side of the head to beyond the angle* of the month. The maxillary teeth are more 

 developed than in the Priitii atiq*onm. 



Fig. Linn. Trans, ii. pi. 26. f. 6. and pi. 27. 



Habitat. Port Jackson, in New Holland. 



