iJcib' PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 



TaiJc of measurements. 

 Batrachus tau, siibsp. beta. 



Curient urnubw of specimen. 

 Locality 



21477 

 PeDsacola, Fla. 



Extreme length 



Leng-.ii to origin of middle caudal rays 



Head: 



Greatest lensth, obliquely to gill-openins 



Greatest wi(ith 



Widtli of iiitridiliital bone 



Lenjitli ct snout KiUlique) 



Len^ulli 111 (ipciruliiui to end of longest spine. 



Lengtli of upper .jaw 



Lengtb of mandible 



Diami'tei- of orbit 



Dorsal (.spinous) ; 



Distance from .s]U)ut 



Length of base 



Height at first spine 



Height at second spine 



Dorsal fsoft) : 



Length of base 



Anal : 



Distance fiom snout 



Length of base 



Caudal: 



Length of middle rays 



I'ectorai: 



Distance from snout 



Length (without peduncle) 



A'entral: 



Distance fiom snout 



Length 



Dorsal 



Anal 



Pectoral 



Ventral 



Millime- 

 ters. 



lOOths 



of 

 length. 



ni, 24 

 22 

 18 



42 

 29J 

 4 



20i 

 26 

 5 



37 

 9 



? 



31 

 17J 



7. Batrachus tau, snlKsp. pardus Goode & Bean. 



Two jspecimeiis of a very remarkable form of Batrachus were collected 

 in l*ensacola in 1878 by Mr. Silas Stearns. They are mentioned on p. 

 127, m our pai)er on the flshes of Pensacola, September 19, 1879. Our 

 suspicions as to their specilic individuality then expressed have not 

 been confii-med by more careful study. The characters by which they 

 are so]t;ii;it('d from typical ^«trac7i**,s tow are extremely difficult to define. 

 Yet, unless other specimens are obtained which shall bridge the chasm 

 between the two Pensacola specimens and all others of B. tau from 

 Pensacola and elsewhere in the Museum, we cannot but consider them 

 as representing two distinct subspecies. The melanistic tendency of 

 the typical B. tau in the South, as observed by Giinther and illustrated 

 by all our Gulf specimens, shouhl be taken into consideration, for the 

 types of B. pardus are lighter in cohn- than any specimens of B. tau in the 

 Museum. 



The vertebrfe number 12-22 (the modified vertebra at the base of the 

 caudal fin not being included). These fish were called in Pensacola by 

 the names "Sea Eobin" and "Sarpo"; the latter being doubtless a cor- 

 ruption of the Spanish "Sapo", meaning "toad". 



