180 



SUPPLEMENT. 



mation in Belgium, Germany, France, and Italy (Bronn). 



E. Loffoden I., 450 f. (Sars); W. coast of N. America (P. 

 Carpenter and Cooper). Var. polygona. Off Unst, 95 f. Yar. 

 Gouldii. N. of Hebr., 550 f. ; " cold area," temperature of 

 bottom 32°-5(C. andT.). F. Helensburgh, N. B. (Robert- 

 son) ! ; Maine (Packard). E. Labrador, 15-50 f. (Packard) ; 

 Maine (Mighels). 



P. 250. — A. Crotjllnexsis. 



Bodt clear white : mantle having its edges puckered : in- 

 current tube forming a wide slit, which scarcely protrudes be- 

 yond the valves : foot placed as in A. jiexuosus, assuming 

 various shapes, and often bulbous at the point. 



Off Unst, 90-140 f. (J. G. J.) ; N. of Hebr., 189 and 650 f. 

 (C and T.). E. Loffoden I., 450 f. (Sars, as A. pusillus) ! ; 

 Naples (Acton and Stefanis) ! : Madeira (coll. M' Andrew) ! It 

 crawls, like Crenella decussata, by extending its foot and at- 

 taching itself by the point. 



P. 251. A. FERRTJCHXOSTJS. 



Body pale greyish- white : mantle having thick and expan- 

 sile edges, which protrude when the animal is feeding ; it 

 forms a long and narrow (but not tubular) slit or fold on the 

 ventral side : foot cylindrical, very extensile. 



Hebrides in soft and tenacious mud, 133 f. (J. G. J.). 



F. Christiania (Crosskey and Robertson) ! E. Loffoden I., 

 250 f. (Sars) : Naples (Tiberi and Acton) ! 



P. 254. — Diflodonta rotttndata. Belgrave Bay, Guernsey, 

 living in sand at low water of spring tides (Gallienne). F. 

 Antwerp Crag (Nyst); Italy (Brocchi and others); Rhodes 

 i Mus. J. d. PI.) ! E. Atlantic coasts of France, Mediterranean, 

 and Adriatic. Venus lupinus, Brocchi. 



P. 260. — Ctamitjm minutum. F. Norway (Sars). E. Brit- 

 tany (Cailliaud); G. Gascony (Fischer); Behring's Straits, 20- 

 40 f. (Gould). Rbmer placed this species in the genus Venus ! 



P. 263. Cypricardia lithophagella. Mr. "Waller has also 

 found a small single valve in dredged sand from Guernsey. 

 E. Loire-Inferieure (Cailliaud) ! C. Rcnieri, Nardo, and 

 Byssomia fragilis, Costa. 



P. 268. — CaPvDITtm aculeatttm. F. Italy. E. Holland 



