Division of Charrs 295 



of fo7itiiialis into one subspecies, the Dublin 

 Pond trout from its resemblance in structure 

 and markings to the Eastern brook or " speckled 

 trout " ; that of alpinus into four forms, from 

 their anatomical similarity to the saibling or 

 the charr of northeastern America and of 

 Europe. These four subspecies may be distin- 

 guished from fonti7ialis on sight by the absence 

 of the dark mottlings or wormlike markings 

 on the back, which are always present on the 

 "speckled trout." These saiblings are popularly 

 known as the long-fined charr, the Greenland 

 charr, the Arctic or Floeberg charr (all of 

 Arctic habitat), and the Sunapee trout. The 

 fourth species {Oquassd) has two subspecific 

 forms, so classified because they are anatomical 

 analogues of the typical Oquassa or blueback 

 trout of Maine ; they are popularly known as 

 the Naresi trout (Arctic America) and the Lac 

 de Marbre trout of Canadian lakes. The Dolly 

 Varden trout {Salvelitms parkei), a native of 

 Western waters, but recently introduced to 

 Eastern habitats, is a species unto itself and 

 has no close relatives as yet discovered, if we 

 except the malma trout of Kamchatka, which, 

 in fact, is the type of the species; it is techni- 



