22 



EEPORT OF COMMISSIONEE OF FISH AND FISHERIES. 



connectiug forms. Premising, tben, that iu giving to the Noank speci- 

 mens a subspecific name, my object is simply to define the limits of 

 variation from the normal type in a given direction, I would provis- 

 ionally propose that they be designated as subspecies hreviccmdata. 



The specimens from the Saint John's Eiver, Florida, are extremely 

 variable in every respect. Certain individuals show a tendency to elon- 

 gation of the head and tins, and also a slenderness of the posterior part 

 of the body, and nearly all the individuals from that region are more 

 lightly and gracefully shaped ; they all have a tendency to a yellow 

 coloration, especially upon the caudal lobes. 1 have not felt justified, 

 however, in calling it a subspecies. 



1 have not had au opportunity to study the Maine schools, but am 

 inclined to believe that their differences are very perceptible. 



In plate VI are shown the chief variations of form. Fig. 1 shows the 

 typical lorm; fig. 2 the subspecies brcvicauduta ; fig. 3 the average form 

 from the Saint John's Eiver, Florida ; fig. 4 the subspecies aurea. 



Table of measurements. 



Cnrrent number tf specimen. 

 Locality 



Extreme length 



Body : 



Greatest height 



Least height of tail 



Length of caudal podunclo 



Head : 



Greatest length 



Distance Imm snout to nape 



Gioaiest width — 



LenLiih of suout from peip. from centre of orbit 



Lenglh of oporcnlam 



Loiigtii of maxillary 



Length of mandible 



Distance from snout to center of orbit 



Dorsal: 



Distance from snout 



Length of base 



Oiigiu of pectoral to origin of dorsal 



End of d(>r.-<al to end of anal 



Length of longest ray 



Length of last ray 



Anal : 



Distance from snout 



Lengt li of base 



Origin of anal to origin of dorsal 



Length of longest ray 



Length of last ray 



Caudal : 



Length of middle rays 



Length of external rays, superior 



interior 



Pectoral: 



Distance from snout 



Distance of tip Ironi snout 



Length 



Length of longest axillary appendage 



Ventral: 



Distance from snout 



Length 



Origin of ventral to end of dorsal 



Dorsal 



Anal 



K umber of scales in lateral line 



10 405=700 

 U. A. S. 



Wood's Holl. 



10,405 = orig 

 JS'o. 247. 



Wood's Holl. 



Millim. lOOths 



Very /at. 

 251 



9 

 94 



32 

 20 

 15 

 10 



9 

 14i 

 17J 

 lOi 



54 

 19 

 41 



2.3i 

 Ivi 

 6" 



73 

 14 

 39 



eh 



5i 



5i 

 23' 

 26A 



30 



48A 

 19' 

 11 



53 



Si 



38 



20,666 a. 

 Wood's Holl. 



Millim. lOOths. Millim 



Plump. 

 243 



20 

 20 

 107 



31i 



31 



20A 



10 

 9 



10} 



51 



171 

 33f 

 24 

 11 



7 



Hi 

 33" 



5i 



20* 

 23' 



32 



48 



130 



lOOths. 



34.i 



53 



7J 

 31' 



31 



20i 



lOi 



9 



14 



37 



lOf 



49 



17* 



35i 



25 



IQh 



154 

 36 



(ij 

 4k 



