327 



1900. Henry-Land 20 fms. Stones ca. 50 spec. (05 — 19 nmm.). 



1900. Tuiner-Sound ca. 3 — Numerous specimens. 



1891—92. Scoresby-SoundlO— 16 — 6 — 



1891—92. — — 10—60 — l — 



1891—92. Danmarks 0... 6—7 — 1 — 



1891—92. Hekla-Havn 3—6 — 25 — 



1891—92. Gaaseland 5 — 



1900. Hurry-lnlet 10 — Clay 15 — 



1900. Cape Borlase Warren 10 — Laminarians 16 — 



1900. Sabine-Island Laminarians 9 — 



The Kolthoff-Expedition of 1900 took it in Mackenzie- 

 Bay N. of Franz Joseph-Fjord at depths of IV2— 5V2 fms. 

 (1 specimen), 6V2 — 10 fms. (14 specimens) and 6V2 — 19 fms. 

 (numerous specimens), according to R. Hägg (1. с.) who has 

 recorded it as 3 species: Modiolaria corrugata^) (p. 22), M. 

 laevigata (p. 23) and M. substriata (p. 25) ^). 



The Germania-Expedition of 1869—70 took it at Jackson-, 

 Clavering-, Sabine- and Shannon-Isles at depths of 4—30 fms., 

 according to Möbius who records it as Modiolaria discors 

 (1. с p. 251). 



Modiolaria laevigata is thus extremely common along the 

 East-Greenland coast and has been found as far North as 

 collections on the whole have been undertaken (Shannon-Island 

 at 75— 75V2 N.). 



At East-Greenland the laevigata-iorm is by far the most 

 frequently occurring and obtains a length of 36'5 mm. The 

 variety substriata occurs comparatively seldom; it obtains a 

 length of 32 mm. 



Modiolaria corrugata Stimpson is up to the present day 

 often confounded with M. laevigata, just as several authors 

 speak of transition stages between them. They are however two 



^) 1 have had the opportunity of seeing some of the East-Greenland 

 specimens which Mr. Hag g has examined, and I must declare his de- 

 termination to be incorrect. M. corrugata does not occur at all at 

 East-Greenland. 



^) I only consider "M. substriata« a variety of M. laevigata, as transition 

 stages occur between them. 



