222 . Herman Friele. 



Terrhratnlina sejjfcnfr/oitaUs Couth. 



A few specimens found together with the preceding species 

 and at St. 235 — 300 fath. 



Acephala. 

 Peden groenlandicus, Sowb. 



Appeared numerous at 30 to 100 fath. and acquires a size 

 of 20 m. m, 



Pectcn Hoshjnsi, Forb. 



In these quite arctic waters this species grows to a very much 

 larger size than on the shores of Norway, even those of Finmar- 

 ken, and specimens measuring 20 m m. were not uncommon. It 

 appeared in great numbers at the same depth as the Tcrcbralida 

 arctica C263 fath.) 



Bachriidium vitreum Holb. (Møller), 

 Common between 70 to 100 fath. 

 Area gJaclalis Gray, ^i. ohliqaa Ph.C?), A Koniil Danielssen. 

 In great numbers at several stations, between 70 to 300 fath. 

 Area pecttmculoides Scacchi var. major Sars. 



It aquires a size of 14 m.ra. length, lOm.m. breadth. St. 

 225-300 fath. and St. 237 -263 fath. 

 Yoldia intermedia M. Sars. 



A few specimens at St. 224-95 fath. and 225 300 fath. 

 Yoldia pygmæa Miiust. var. symmetrica. 

 Here, off Jan Mayen, as at all gr^at depths of the cold area 

 occurs a peculiar symmetrical from of Yoldia, which I provisio- 

 nally refer to a variety of Y. pi/gnuca. This form is more oval 

 aud not so tumid as the typical one; the umbo is nearly central; 

 the posterior side broadly rounded. 

 St. 225 -aOO fath. 

 Yoldia frigida Torell. 



St. 223-70 fath. 

 Led a pcrnnla Moll. 



In great numbers at St. 223—70 fath. 

 Cardiiim groenlandicum Chem. 



Numerous between 10 to 20 fath., but the specimens small. 

 Astarte striata Leach var. glohosa Moll. 

 One specimen at St. 225—300 fath. 

 Astarte sulcata d'Cost. var. crenata Gray. 

 St. 237-263 fath. 



