248 BIOLOGICAL SURVEY OF 



PHrLOSCiA Latreille 



P. (Philoscia) muscoeum (Scopoli) var. sylvestris (Fab- 

 ricius). (G. 0. Sars, 1898, p. 173, pi. 76, fig. 1.) Found 

 especially about the bases of trees. Salisbury Cove, Hulls 

 Cove", Bar Island. 



Porcellionidae 

 Cylisticus Schnitzler 



C. coNVExus (De Geer). G. 0. Sars, 1898, p. 186, pi. 81.) 

 Corfield, Bar Island. 



PoRCELLio Latreille 



P. (PoRCELLio) scaber Latreille. (G. 0. Sars, 1898, p. 176, 

 pi. 77.) Salisbury Cove, Duck Brook Path, Bar Island, very 

 abundant on Long Porcupine Island. 



Trachelipus Budde-Lund 



T. (Trachelipus) rathkei (Brandt). (G. 0. Sars, 1898, 

 p. 180, pi. 79, fig. 1.) More generally distributed than the 

 other species. Salisbury Cove, Hulls Cove, Bar Harbor, Bar 

 Island. 



LITERATURE 



Blake, C. H. 1929 New Crustacea from the Mount Desert Region. Biol. 



Surv. Mt. Desert Region, part 3, pp. 1-34, 15 fig. 

 1931 New land isopods from New England. Occas. Papers Boston 



Soc. Nat. Hist., vol. 5, pp. 341-348, 2 fig. 

 MoNOD, Th. 1926 Les Gnathiidae, essai monographique. Paris: pp. 1-668, 



1 pi. 277 fig. 

 Richardson, Harriet 1905 A monograph on the isopods of North America. 



United States Nat. Mus., bull. 54, pp. i-liii, 1-727, 740 fig. 

 Sars, G. O. 1896-1899 An account of the Crustacea of Norway. Vol. 2, 



Isopoda. Bergen: pp. i-x, 1-270, 104 pi. 

 Wallace, N. A. 1919 The Isopoda of the Bay of Fundy. Univ. Toronto Stud. 



Biol. Ser., no. 18, pp. 1-42, 12 fig. 



Order AMPHIPODA 



The present order is less instructive from a zoogeographi- 

 cal point of view than are some others. One may, however, 

 call attention to the presence of certain boreal forms, such as 



