BULLETIN OF THE UNITED STATES FISH COMMISSION. 293 



134.— BROOK TROUT FROITI :UOIVA1>!VO€K IvAKE AND CRinTIIVE 



I^AKE, NEW IlAnPSIIIRE. 



By TAKtETOW H. BEAN. 



Curator of Fishes, National Musenm. 



With reference to the trout recently received from Mr. Walter J. 

 Greenwood, fish and game warden, Dublin, N. H., I have the following 

 communication to make: These trout have also been made the subject 

 of a letter to Mr. Eichardson from Mr. J. H. Kimball, of Hillsborough, 

 N. H. ; they have been referred to, also, in the Boston Journal of March 

 22, under the title of " Dublin Trout;" and are also mentioned in Forest 

 and Stream of March 27, 1884, page 170, second column, under the title 

 "A Peculiar Fish." 



After a careful examination of the individuals received from Mr. 

 Greenwood I arrive at the conclusion that they are the common brook 

 trout {SalreUnus fontwaUs), differing in no respects, so far as I can 

 see, from the usual type of the species excepting in their pale colora- 

 tion and few vermilion spots — variations which I have frequently ob- 

 served in trout from widely different localities. In order to aid in deter- 

 mining the species I record the following characters of the Monadnock 

 Lake trout: 



It is a SalreUnus without hyoid teeth. The gill rakers are 15 or 16 

 in number; there are about 115 tubes in the lateral line, the number of 

 rows of scales of course being much greater. The eye equals the snout 

 in length and is contained 4J times in the length of the head. The 

 maxilla reaches a little beyond the vertical from the posterior margin 

 of the orbit and is nearly one-half as long as the head. The origin of the 

 dorsal is nearly midway between the tip of the snout and the root of the 

 irpper caudal lobe. The length of the pectoral is one-sixth of the total 

 without caudal. Dorsal, 10; anal, 10. Coloration, silvery gray on the 

 upper parts, whitish below ; pectorals, ventrals, and anal largely ver- 

 milion ; vermilion spots on the sides, few in number. 



Washington, D. C, April 5, 1881. 



THE DUBLIN TROUT. 

 [From fhe Boston Journal of March 22, 1864.] 



The peculiarities of Dublin trout have caused the speculations of 

 anglers and others, during the last half century at least, and as the 

 subject seems to be revived bj' the Dublin fish wardens, the following 

 letter from Professor Agassiz, written about twenty-five years ago, will 

 be interesting. After some male specimens were sent, as Professor 

 Agassiz requested, he wrote that the examination of them only con- 

 firmed his previous opinion that the trout were specifically distinct, 



