92 



foetal and adult state of the following, in these two points alone 

 demonstrates Acanthidium pusillum to be no stage of A. calceus. 



AcANTHiniUM CALCEUS. " Sapata." A. purpureo-fuscum, suh- 

 tus pallidius : rostro plano-depresso : dentibus inferioribus 

 biseriatis : spiracul'ts oculo, pinnaque dorsali secunda caudce 

 approximatis. 



Centrina Salviani, Syn. Mad. Fish in Trans. Zool. Soc. p. 194: 

 nee aliorum. Rarior. 



This shark very much resembles in its general aspect Scymnus 

 w/c«ens2S, Risso, the " Gata" of Madeira : but is at once distinguished 

 by the spines in front of the two dorsal fins, which, as in A. pusil- 

 lum, are both recurved, and ought, had I attended to the excellent 

 figures copied by Willoughby from Salviana of Centrina ni^r a, Cuv., 

 instead of allowing myself to be deceived by a miserable figure of 

 Lacep^de's, alone to have preserved me from the blunder of referring 

 to that species for the present shark, the usual size of which exceeds 

 by a few inches only three feet. 



Fam. Raiid^. 



Rata oxyrhyncus, Will., Ichth. p, 71. — " Raia." 



Sharp-nosed Ray, Penn., Ed. 1. iii. 83. No. 31. Yarr., Brit. 

 Fish. ii. 424. 



Two male individuals only have occurred : the largest, measuring 

 three feet in width from wing to wing, was furnished on the back 

 with patches of strong hooked spines or prickles, much as in the 

 figure in the British Fishes ; but the second example, scarcely two 

 feet wide, although decidedly a male, was devoid of these append- 

 ages. The colour of the upper surface was a pale, dull, yellowish, 

 or ashy-grey, obscurely mottled or dappled with a few scattered di- 

 stant paler whitish spots. 



Trtgon altavela. — " Andorinha do mar." T. corpore rhom- 

 boideo, duplo latiore quam longo, alts expansis, cauda perbrevi. 



Pastinaca marina altera ■KrepvirXaTela, Altavela Neapoli dicta Colum- 

 ns. Will., Hist. 65. Tab. C. 1. f. 3. (Copied from F. Columna.)— 

 Rariss. 



A single female individual only has occurred, measuring five feet 

 and a half from tip to tip of wings. 



