MEGALOPS THRISSA. 121 



per urinam pellere dicitur, umbilico alligatus, fluxus hystericos 

 retrahit et inhibet. Plantis pedum appositus capitis, cordisque 

 morbis, phrenitidi, febribusque succurrere statuitur." It is almost 

 unnecessary to observe that these observations are entirely 

 visionary and hypothetical, and the Toad and its preparations, have 

 long since been banished from medical practice. 



Class IV.— PISCES. (Fis/ies.) 



Vertebrated animals, with cold red blood, respiring 

 by gills or branchiae, and moving in the water by the 

 aid of fins. 



MEGALOPS THRISSA. 



Poisonous Sprat. 

 Pl. XX. 



Order Abdominales. Lin. Malacopterygii Abdomi- 

 nales. Family Clupe^e, Cuv. 



Gen. Char. Eyes very large; rays twenty-four or 

 more on the branchial membrane ; last ray of the 

 dorsal Jin terminating in a long filament. 



Spec. Char. Head small, compressed, and without 

 scales ; lower jaw bent upwards, and terminating in 

 a point, which fills the notch in the upper ; body 

 blueish silvery, dusky on the back ; pectoral fins red ; 

 last ray of the dorsal fin much elongated. 



Clupea Thrissa; Syst. Nat. Gmelin, p. HOG; Osbeck, Reiss. p. 33(5; Bloch, 

 Ichthyologie,-x.n.v.27,tA04. Clupea minor j Broivn, Jam. p. 443. Caillen- 

 Tassart ; Duhamel, Trait, de Pec/i. ii. p. 548, t. 31, f. 3. Borstenflosse; Midi, 

 L.S. T. iv.p. 374. Alosa argenteo-ccerulea pinnula caudata recta. Savalle; 

 Plumier, MSS. 



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