BIIIANG TIIX K. SV. VET.-AKAl). IIAXDL. BAND 1. N:0 13. 13 



42. Surirella Gemma Enu (Sm Syn. I, pag. H2, T. IX^ 

 fig. 65). Spetsbergen: Hackhiyts, Kings Bay (KiO fathoms). 



43. Surirella ovata Kg {Sui Syn. I, pag. 33, T. IX, lig.. 

 70). Spetshergeit: Hackluyts. 



44. Campylodiscus angularis Greg (Diat. of Clyde, pag. 

 502, Pl. XI, tig. 53). This fine species is tolerably common 

 throughont tlie whole arctic sea. Spetsbergen: Amsterdam Id., 

 Brandwyns Bay, Sclioal Point, Treurenberg Bay. GreenlancL 

 Finm((rken: Grötsund. 



C. angularis has been found before only in Scotland. 

 Scotch spccimcs have according to Gregory KiO — 180 costae, 

 but on specimens from Spetsbergen I counted only 80. 



Ccnnpylodiscus angularis Rab & Jan. (Hond. Diat. pag.. 

 (3, Pl. I, fig. 10) from Honduras is certainly another species 

 probably C. erebrecostatus Greville. 



45. Campylodiscus Groenlandicus Cl. N. Sp. Orbicular, 

 central space smootli, no median line ; costa? about 32 — 34 

 distant, delicate, radiate, scarcely reaching över half of tlie 

 area of the disc. Margin of tlie disc faiutly striated. Diam. 

 0,096; costffi about 3 in 0,u25 m.m. \cvj rare, only two 

 specimens being observed in mud from Greenland. Nearly 

 related to C. costatus / Hibernicus Gomn. but distinguished from 

 this fresliwater species by its perfcctly smootli disc, its more 

 distant and delicate costffi. Pl. II, fig. 9. 



46. Campylodiscus Ralfsii Sm (Syn. I, pag. 30, Pl. XXX, 

 fig. 257). Yery rare, found only in mud from JJavis Strait, 

 dredged from great depths, and in tlie deposit from Kings 

 Bay, Spetsbergen. This generally rare species is found in most 

 otlier seas. 



47. Campylodiscus echineis Ehb (C. Argus Bail, C. cribrosus- 

 Sm). Very rare, only one fragment being found by Dane& 

 Id. Spetsbergen. 



This species is widely distributed. North America from 

 New Haven to New Orleans (Bail), California, Australia and 

 also in the Baltic. 



48. Campylodiscus Thuretii Bail (C. simulans Greg. C 

 fastuosus, Grun. C. parvulus Sm. C. blcruciatus Greg). Very 



