34 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 



type in a given direction, 1 would provisionally propose that they be 

 designated as variety brevicaadata. 



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

 variable in every respect. Certain individuals show a tendency to 

 elongation 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. I have not felt justified, 

 however, in calling it a variety. 



I have not had an opportunity to study the Maine schools, but am 

 inclined to believe that their differences are very perceptible. 



Table of Measurements. 



Current number of specimen. 

 Localitr 



Extreme length. 



Body: 



Greatest height 



Least height of tail 



Length of caudal peduncle. 



Head : 



Greatest length 



Distance from snout to nape 



Greatest width 



Length of snout from perp. from centre of orbit. 



Length of operculum 



Length of maxillary 



Length of mandible 



Distance from snout to centre of orbit 



Dorsal : 



Distance from snout 



Length of base 



Origin of pectoral to origin of dorsal , 



End of dorsal to end of anal 



Length of longest ray 



Length of last ray 



Anal : 



Distance from snout 



Length 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 from snout 



Length , 



Length of longest axillary appendage 



Ventral: 



Distance from snout 



Length 



Origin of ventral to end of dorsal , 



Dorsal rays 



Anal rays 



10.405 = 709 

 C. A. S. 



Wood's Holl, 

 Mass. 



Millim. lOOths 



Very fat. 

 251 



3H. 1 , 

 9 



n 



32 

 20 

 15 

 10 

 



14* 



r>4 



19 

 41 



m 



73 

 I t 



39 

 64 



si 



23" 



26} 



30 



19 

 11 



53 



aft 



38 



10,405 = Orig. 

 No. 247. 



Wood's noil, 

 Mass. 



Millim. lOOths. 



1'lu )np. 

 243 !.... 



313 



31 

 904 



10 

 9 



"i 



10* 



si 

 l~i 



33| 

 24 

 11 

 7 



4i 

 20A 



93 



32 

 48 

 17} 



53 



Ji 



31 



20,666 a. 

 Wood's Holl, 



Millim. 



130 



lOOths. 



34 V 



31 



204 



10'. 

 9" 

 1 t 

 17 

 101 



49 



l~h 



35| 



25 



124 



72 



154 



3(i 

 61 

 4i 



54 



