116 BOARD OF AGRICULTURE. 



Sub-class Teleostei. ' SALMONOiDiE. 



in the caudal region ; the head being regularly subernial, contained 

 five times in the total length. 



The maxillaries are gently curved, extending backwards to about 

 the posterior margin of the orbit. The female is stouter, with 

 peduncle of the tail shorter; the head has the same general shape, 

 but is not contained five times in the total length. The maxillaries 

 are less curved, but extend as far backwards as in the male. 



The e^'e is very large, its diameter being contained nearly five times 

 in the length of side of head. The caudal is deeply emarginated 

 posteriorly, giving to it a more forked appearance than either in 

 Salmo oquassa or Salmo sebago. The adipose fin in the male is 

 situated opposite the anterior margin of the anal, whilst in the 

 female it corresponds to the posterior margin of the same fin. 



The scales are well developed, being somewhat smaller, however, 

 than in Salmo sebago, and considerably larger than either in Salmo 

 oquassa or Salmo erytlirogaHler . On the dorsal and ventral regions 

 they are considerably smaller than upon the sides, and along the 

 peduncle of the tail. They extend, diminishing in size, over nearly 

 the half of the length of the middle rays of the caudal fin. 



The lateral line takes an almost straight course along the middle 

 region of the flanks. The following is our approximate formula of 

 the rays of the fins : 



D. 2, 12 ; A. Y, 9 ; C. 81, 8, 9 ; I. 5 ; V. 1, 9 ; P. 14. 



There are two anterior rudimentary rays to the dorsal, one or 

 two to the anal, one to the ventral, eight or ten to the upper lobe 

 of the caudal, to five or six to the lower lobe. The upper surface 

 of the head and dorsal region is blackish brown ; the sides are 

 silvery white, the belly yellowish, the region above the lateral 

 line is densely spread all over with black, irregular spots, some of 

 which are confluent. A few scattered ones may be seen beneath 

 that line upon tlie middle of the abdomen. Four to six of these 

 spots, well defined, are always observed on the operculum, one of 

 which may occasionally reach the preoperculum. 



A few reddish orange dots, individually situated in the middle of 

 a black spot, are occasionally observed along the middle of the 

 upper part of the flanks. Whether these dots are peculiar to the 

 female, or proper to both sexes, 1 am not prepared to saj', from 

 want of sufficient information upon that point. This species was 

 first brought to my notice by Mr. Townsend Glover, of Fishkill 



