396 Dr. 0. A. L. Morch — On the Crag of Iceland. 



*'*8. Idttorina littorea, Linn. 



Litorina littorea, L., Wood, p. 118, tab. x. fig. 14. 

 One specimen exactly corresponding to the variety figured by 

 Wood, smooth and banded ; 16 mm. long, circ. 15 mm. in 

 diameter. Paytull. 

 9. Littorina Grcenlandica, Chem. 

 The nucleus of some specimens. (Gudman.) 



10. Tritonium Tottenii, Stimpson. 



Buccinum imdatum vulgatum, Wood, tab. 3, fig. \2e. 

 „ „ „ Winkler, p. 210. 



Probably only a variety of Buccinum undulatum, Moller. 



11. Tritonium Groenlandicum, Chem. 



Buccinum undatum, var. Iceviusculum, Wood, p. Ill, tab. 3, fig. 12a. 

 Tritonium undulatum var. Grcenlatidicum, Mbrch, Payk. 

 Fragmentum T. Icevis, with the epidermis ; 20 mm. in diameter, 

 from PaykuU. This species is mostly a dwarf variety of the 

 preceding. 



12. Tritonium undatum, L. (var. pumilio). 



circ. 36 mm. long ; 20 mm. in diameter, plicis obliquis suturalibus 

 prominentibus. Three specimens. 



13. Tritonium scalariforme, Beck. 



circ. 25 mm. long,; 12 mm. in diameter; 13 mm. long spirae. 

 One specimen, Gudman. 



14. Buccinopsis crassa, Nyst. 



Buccinum crassum, Nyst, p. 569, tab. 44, fig. 7. 

 Buccinum. Dalei, Sowb. M.C., tab. 488, fig. 12 P 

 Buccinopsis Balei, Sowb., var. Morcb, Payk. 

 One specimen measures 39 mm. in length, and 20 in diameter. 

 Several specimens from Gudman and PaykuU. It reminds one 

 of a dwarf thick-shelled Fusus antiquus. 

 16. Fusus (Sipho) Olavii, Beck.^ 



Testa i^MS. gracili affinis sed parva tenuiuscula, sutura profunda, spira 

 abbreviata. Mammilla apicalis obliqua Littorinam obtusatam 

 non absimilis. Long, speciminis majoris, 35 mm., diam. 17 mm. 

 Long, speciminis minoris, 16 mm., diam. 9 mm. 

 Fusus gracilis, Wood, var. a, tab. vi. fig. 10«, non absimilis. 

 Fusus Olavii, Beck, Morcb, apud Payk. 

 Var. Spira longa, 38 mm. long, 16 mm. in diameter. 

 Troplion gracilis, Wood, tab. vi., fig. 10&. ; var. /3 non absimilis. 

 «=17 Fusus (Sip^o ?) propinquus, Alder; var. Spira elongata. 

 Fusus propinquus, Aid., Morch, Payk. 



Among Paykull's collection, now in the museiim of Stockholm, I 

 believe there is a specimen of this species. It is certainly 

 found in the Crag of Belgium. I have seen several specimens, 

 with well-preserved apices, corresponding in shape to the figure 

 given by Nyst. 

 18. Fusus (Neptunea) fornicatus, Fabr. 



Fusus antiquus, Wood., tab. xi. fig. 4«-A (Winkl.). 

 Fusus despectus, L., var. Mbrch, Payk. 

 Common (Winkler). I have only seen a well-preserved fragment. 

 43 mm. in diameter. 



^ Not the Fusus Olavii, Beck, in Eichwald Urwelt Russlands, 1842, p. 141. 



