412 



Dr. IJjuicrot't on Jainaican Fis/us, S^c. 



Ech. ^'aucratcs, 



1 . Body griHMi ; boneath the lateral 

 line while. 



2. All the fills exeopl the caudal 



yellow, and edgal with violet. 



3. Lateral lino white. 



4. Iris golden yellow. 



while in our Speeies they are 

 as staled helow. 



1. IUhIv without the shi>;htest 



tin^e or<ireen, but of a lull 

 black on the upper and more 

 anterior portion of the back, 

 and of a ilark grey over the 

 rest o( the body, with a 

 lighter grey stripe from near 

 the eye to near the vent. 



2. All the tins of a dark grey 



passing into a black at the 

 anterior and outer portions. 



3. Lateral line consisting of very 



small black \K)ints. 



4. Iris a pure white. 



5. Tail fin forked. 



6. Skin scaly. 



7. 22 to 25 bars on the disk. 



8. reeloral fins very acute at the 



tip. 



5. Tail fin entire. Shaw adds 



that it is ovate. 



6. Skin naked. 



7. 24 bars on the disk. 



8. In the figures of Shaw and 



Bloch the pectoral tins are 

 rounded at the tip. 



1 had at first included in the above enumeration a ditlercnce as to the 

 doi^sal fin, which is always described as being single in Ech. ^aitcrateSf 

 and which I found double in the first two or three individuals of our 

 Echcucis that I saw: but in the last specimen I met with, the larger one 

 now sent, it was likewise single ; nor have I seen fishes enough to 

 authorise mctosiiy whether the fin be generally single or double. 



I have just stated the skin in our species to be scaly, and I beg to call 

 Mr. Bennett's attention to a peculiarity in the scales that I have never 

 noticed before, eitl.er in authours or in nature. The scales appear to be 

 of two sorts; one of them is larger, rhomboid, reticulately disposed, and 

 dark coloured, forming as it were ihe ifround scales; the other much 



