238 NEW YORK STATE MUSEUM 



with a ^mall-scaled one, the hybrid will be large-scaled which- 

 ever way the cross be made. The hybrid between the brown 

 trout and the brook is n large-scaled form, aM it is sterile as 

 far as reported. The aquarium has had this hybrid from the 

 South Side Sportsmen's Club, and from the New York hatcheries 

 at Cold Spring Harbor L. 1. and Caledonia. It is always a strik- 

 ingly handsome fish, and grows to a large size; but it is far less 

 hardy than either of its parents. The cross has always been 

 artificially made, and never occurs naturally. Two specimens 

 studied gave the following measurements in inches: 



MEASUREMENTS 



Caledonia N. Y. Oaktlale N. V. 



June 10. 1896 Mar. 2:{, 1897 

 Jaiues Anniu jr G. P. Slade 



Extronie length 914 HM 



Lenfrtli of miclclle caudal rajs from end of scales. % .... 



Depth of body . . , 1% 3% 



I^east depth of caudal peduncle % .... 



Lensth of head 2 3% 



Ticngth of snout y^ li/s 



T.ciigth of upper jaw I14 - . . 



Length of lower jaw 1% .... 



Diameter of eye tb tb 



Distance from snout to dorsal origin 3% .... 



Length of dor.sal base 1 t\ .... 



lA'iigth of longest dorsal ray 1 A .... 



Length of last dorsal ray % .... 



1 >istiince from snout to ventral origin 4% .... 



Length of ventral 1% 



1 >ist:ince from snout to anal origin 6 .... 



Ijeiigih (>r .-lual base y^ 



Length of longest anal ray I14 .... 



T,cnirth of l:ist :in:il ray 14 .... 



'I'lir Caledonian specimen has no liyoid teeth; the vomerines 

 are in a veiy small patch on the'head of the bone only. The gill 

 raki'is arc 1 10. (he longest about one half the diameter of the 

 eye. li li.is ;iIhmiI liii tubes in the lateral line. Branchiostegals, 

 1(1. The following color notes were taken from the fresh fish, 

 hoisiil (in wilh numerous dark blotches resembling those of 

 young laiiiltow; adijiosc long and sh'iidcr. amber color with two 

 obscure dusky lilo(clies. one of tliese very indistinct; lower half 

 of sides j.ink; \eiiii;il, anal and caudal pink; ventral and anal 



