8 Herman Friele. 



The shell is of a handsome yellow colour, glossy and trans- 

 parent, perfectly smooth, except at the back of the lip, where 

 some coarse spiral-ribs and finer lines of growth suddenly appear. 



Fusus turgidulus Jeff. 



Form oval fusiform with 7J— -8 ventricose whorls, suture deep, 

 canaliculate; apex more or less swollen and obliquely twisted; co- 

 lumelle curved; mouth oval, somewhat contracted at the canal; 

 lip sharp; inner lip forming a thin glaze- cover on the pillar. Shell 

 thin, white, with a yellowish occasionally smooth, sometimes velvity 

 epidermis; structure nearly smooth; on the 3 d whorl very minute 

 spiral-striæ appear reaching to the penultimate whorl, but there 

 they gradually diverge, and change into obscure folds; lines of 

 growth numerous and fine. 



Size of three specimens: 



L. 56 B. 24, mouth inch canal 26,5 m - m - 

 „ 48,5- 24 - 25 - 



„ 41 - 22,5 — 27,5 - 



(the last is from „Porcupine" Expdn.) 



Radula has about 100 joints. 



Fig. 17 and 17 a teeth and operculum. 



Hab. St. 18, 400 f. ; 33 510 f. and 87, 488 f. as in the „Por- 

 cupine" Expdn. St. 65, 345 f.; 84, 155 f. & 87, 290 f. 



A singularity not peculiar to this Fusus, is the triangular 

 mark in front of the opening of the mouth being destitute of epi- 

 dermis. This constantly, to a regular form invariably abra- 

 ded piece, must be owing to friction of the operculum against the 

 shell, and I have myself noticed that when the triangular mark 

 is present, traces of the abrasion are visible on the columelle-side 

 of the operculum, the edge beinig more or less thickened. The 

 triangular mark not being always constant within the species, af- 

 fords a too insufficient distinction to constitute a character. 



F. turgidulus Jeff, has not been described before, only men- 

 tioned in Wood's" „Supp. to the Crag Moll" pg. 25. By Dr. 

 Jeffreys it is supposed to be synonymous with F. Leckenbyi 

 Wood, but this again is contradicted by S. Wood, and I have there- 

 fore adopted the name applied by Dr. Jeffreys. 



Fusus islandicus Chmn. 



Hab. St. 25 on the banks off Romsdalen, 3 Specimens, one 

 measuring 130 mm - 



Radula consists of about 100 joints. Form of teeth, fig. 18, 

 bear resemblance to those of F. gracilis according to Dr. Kobelt's 



