46 MR. J. Y.JOHNSON ON NEW FISHES FROM MADEIRA. [Jan. 13, 



is unbranched and very sbort ; the fourth ray is the longest. The 

 tail is much compressed. The caudal fin is deeply furcate, spotted 

 with minute black spots, and covered with small scales. 



The distinct lateral line descends rather rapidly from the shoulder; 

 but from the pectoral region it is straight along the middle of the 

 body. The caducous scales which clothe the body are large and re- 

 markably broad, with the exposed margins armed" with several rows 

 of small spines. Those of the lateral line are about thirty in number, 

 and in the height of the body ten rows may be counted, viz. four 

 above, and five below the lateral line, which is itself formed of the 



tenth row. 



Of this species only a single example (now in the British Museum) 

 has occurred, and this was taken in the month of January. Its 

 dimensions are given below : — 



inches. 



Total length IOt^ 



Height, a little in front of first dorsal 2A 



Thickness ^s 



Head 2| 



Eyes, diameter a" 



— — , distance apart T^ 



Mouth, width behind when open 1 



, length of upper jaw If 



First dorsal, distance from muzzle Sf 



, length of base If 



, length of first branched ray If 



, length of last ray f 



Second dorsal, height 2 



, distance from first dorsal if 



Pectorals, length 2^ 



, distance from muzzle 2f 



, width of base -^o 



Ventrals, length 1 2 



, distance behind pectorals 1 



Vent, distance of vertical from muzzle 5^^ 



Anal, length of fourth ray H 



, length of base H 



, distance from ventrals 2f 



Tail, height I 



Caudal, length 2 



