

1. 



L. 85 



Br. 37 





2. 



. 76 



- 38 





3. 



i 73 



- 33 





4. 



„ 75 



- 29 





No. 1 : 



is the 1 



typical 



No. 



2 and 3 



a Ihinshelled 



Preliminary Report on Mollusca. 5 



Forh. 1847 Tab. 5.) harmonizes on the whole with mine. Lovén, 

 has certainly 9 spines on the lateral tooth, and I have constantly 

 found 11, but this is certainly a very insignificant disagreement. 

 The Radula is of a very uncommon length and I have counted no 

 less than 170 joints. It is appropriate that this very peculiar 

 toothform which distinguishes F. Berniciensis from any nor- 

 thern species should be placed in a group by it self. 



The great number of specimens dredged at the station 10 as 

 well as on the banks off Romsdalen (St, 23, 80 f.) shows that 

 this species varies much, and the following measurements will 

 prove this most satisfactorily : 



mouth incl. canal 48 mm . 

 45 „ 

 40 „ 

 39 „ 

 form, No. 4 var. elegans Jeff and 

 comparatively broader variety, occurred 

 also in the „Porcupine" Expdn I happened to see it at Dr. Jeffrey's» 

 who supposing it to be a distinct species had given it the M. S' 

 name F, tenere. 



Fusus ebur March — Journ de Conch. 1869 pag. 398 — 

 non F. ebur Kobelt 

 „ Moebi Duncker & Metzger — D. Exp. zur Unters, d. 

 Nordsee 1872.- 

 At St. 25, 87 f. (Storeggen) occurred a dead but well conserved 

 Fusus, and having compared it with the type of F. ebur M. in 

 the museum of Copenhagen, I became convinced that it belonged 

 to this species. From Dr. Mørch's description of it in the „Journ. 

 de Conch." it is rather difficult to recognize the form, the type- 

 specimen being worn and partly injured, It is therefore excusable 

 that Dr. Kobelt refers one F. propinquus allied form to Mørch's 

 species; there is however no resemblance between them. 



To complete the description of Fusus ebur Mørch, may be 

 further added: 



Form oval fusiform with 9 ventricose whorls (»Journ. de 

 Conch." which gives 6 must certainly be a printers error) the last 

 occupies three-fifths of the length; apex regular and depressed; 

 suture deep and almost canaliculated; mouth oval; outer lip 

 sinuous, not contracted at the canal, and thickened at the point of 

 connection with the inner lip; the latter being arcuated and 



