448 TORPEDINID^. 



rior nasal valves, which arc broad, confluent into a broad quadran- 

 gular flaj) with a free margin overhanging the mouth. 

 Australia. 



1. Trygonorhina fasciata. 

 Man. <5- Ilenlc, p. 124, tof. 43; Dumeril, JElasmobr. p. 502. 

 Snout rather short, the distance between its extremity and the 

 mouth being not much more than the distance between the outer 

 angles of the nostrils. A scries of obtuse distant tubercles along the 

 median line of the back ; some similar tubercles above the eye and 

 on the shoulder. 

 Southern Australia. 



a. Fine adult female specimen. Tasmania, Purchased of Mr. E. 



Gerrard. 

 h-c. Adult female, 31 feet long, and half-grown : stuffed. South 



Australia. 

 rl. Adult male. New South Wales. From Mr. Krcfft's Collection. 

 e. Young male. Sydney. 



f-f/. Adult male atid female : stuffed. Australia. 

 h. Adult male. Australia. 

 ?'. Half-grown female. From the Haslar Collection. 



Fam 3. TORPEDINID^. 



The trunk is a broad, smooth disk ; tail with rayed 

 dorsal (absent in Temera) and caudal fins, and a 

 longitudinal fold along each side. Anterior nasal 

 valves confluent into a quadrangular lobe. An electric 

 organ composed of vertical hexagonal tubes between 

 the pectoral fins and the head. 



5. TORPEDO*. 



Torpedo, DumMI, Zool. Anali/t. 1800, p. 102. 

 Narcol:)atis, lilamviUe, Faun. Frmi^. 181G. 



Tail very distinct from the subcircular disk, with a fold on each 

 side. Body entirely naked. Two dorsal fins on the tail, without 

 spine ; caudal well developed ; ventral fins separate. Nasal valves 



* 1. Torpedo occidentalis, Sforcr, Mem. Am. Ac. ii. p. 516, ix. 18G7, p. 247 

 pi. r>9. fig. 15, and TVor. Bost. Soc. Nat. Hist. ii. p. 71.^ — United 

 States. 



2. sinus porsiei, Kacm-pfcr, Aincev. Fxof. p. .'JOO ; Ihimiril, Elas^nobr. 



p. .^)( )(•..— R(h1 Sea. 



•"'. eliilonsis, Giiichni. hi Grn/, C/iiJr, Zonl . ii. y\. .'{CS.— Chile. 



