54 F. Ei FRITSCH. 



curvature of the raphe at the ends of the valves, and in the widely separated stria). 

 Some of the specimens (fig. 100) of A T . xtaurujfteruidcfs showed practically no dilation 

 of the poles of the valves. 



NITZSCHIACEyE. 

 Genus HAXTZSCHIA Grim. 

 89. HANTZSCHIA AMPHIOXYS. 



Hantzschia amphioxys (Ehrenb.) Grun., in Clove and Grunow, Arct. Dial,, K. Sv. Vet -Ak Handl XVII 

 '. (1880), No. 2, p. 103. 



Long. valv. = 37-42 /* ; lat. valv. = 7-8 p.. 



Hal>. Freshwater pond, Granite Harbour, January 20th, 1902. 



90. HANTZSCHIA ELONGATA. 



Hantzsctiia elongattt (Hantzscb) Grun., in Cleve and Grunow, op. cit., p. 101 ; Van Hcurck, op. cit., p. 109 

 PI. LVL, figs. 7 and 8. 



Long. 176 /A; lat. 10/u. 



Hal. Gap pond, Winter Harbour ; rare. 



SUBIRELLACEL& 



Genus SURIRELLA Turpin. 

 91. SURIRELLA ANGUSTA. 

 Surirella anrju^ta Kiitz., Bacill. (1844), p. (il, Tab. 30, fig. 52. 







Long. valv. = 30 /x, ; lat. valv. = 8 p. 



IlaJi. In freshwater ice under boulder, Cape Adare, January 9th, 1902. 



