544 Memoir Sears Foundation for Marine Research 



(pp. 459—499); and the rear contour of Its caudal fin is much more deeply concave than 

 that of the sea-run Salvelinus fontinalis (Fig. 128). The danger might be greater of 

 mistaking a stray for Salvelinus alpinus (Arctic charr), for while the head is somewhat 

 longer and the caudal fin more deeply concave in the Lake Trout than in the Arctic 

 charr, the contrasts between the two fish in these respects are not wide (Fig. 118; also 

 cf. Figs. 125, 126, 129). In case of doubt, cut open the body cavity and estimate 

 (even roughly) how many gastric coeca there are, for while the Lake Trout has about 

 120, the average for the Arctic charr is only about 39 (p. 510). 



Synonyms : 



Salmo namaycusi Walhium, P. Artedi Genera Pise, Ichthyol., Emend., 3, 1792: 68 (brief descr. based on 

 namaycush of Pennant, Arctic Zool., Introd., j, 1784: cxci; lakes far inland from Hudson Bay). 



Salmo salar Williams, Nat. Civil. Hist. Vt., 1794: 121, 122 (Lake Champlain, other V'ermont locals.). 



Salmo symmetrica Prescott, Amer. J. Sci., (2) 11, 1851 : 340 (Lake "Winnipiscogee," New Hampshire, and con- 

 necting waters). 



Salmo toma Hamlin in Holmes, Ezekial, 2nd Rep. nat. Hist. Geol. Maine, 2, 1862: 109 (great lakes, deep 

 mountain tarns, Maine; New Brunswick, Canada). 



Cristivomer namaycush Evermann and Kendall, Rep. U.S. Comm. Fish. ( 1 894), 20, 1 896 : 59 1 (Lake Champlain, 

 L. Memphremagog, Vermont). 



Salvelinus namaycush Walters, BuU. Araer. Mus. nat. Hist., 106 (5), 1955 '■ 275. 



Probable Synonym: 



Salmo tructa Belknap, J. Hist. N.H., 3, 1792: 179 ("Winnipisogee" Lake and stream. New Hampshire). 



References for Salt Water: 



Weed, Copeia, 1934: 128 (rec. for Adiok Bay, near Hopedale; for Upaqtik Bay between Hopedale and Nain, 

 Atlant. coast of Labrador); Dunbar and Hildebrand, J. Fish. Res. Bd. Canada, 9 (2), 1952: 95 (rep. by 

 natives for brackish water, George and Koksoak rivers, tributary to Ungava Bay, n. Quebec; but no report 

 of it for salt water there); Walters, Bull. nat. Mus. Canada, Biol. Ser., 128, 1953 : 261 (brackish water, Hudson 

 Bay; river mouths, Coronation Gulf); BuU. Amer. Mus. nat. Hist., 106 (5), 1955 : 275 (Bathurst Inlet, Arctic 

 Canada, near mouth of Burnside R.). 



