372 Mr. T. A. Verkriizen on a 



of my labours to the conchological world, I now have much 

 pleasure in doing so, trusting it may prove of some interest. 

 I returned from Reykjavik towards the end of July, when our 

 voyage back to Granton Harbour was performed in about five 

 days and five nights, and took consequently nearly a day and a 

 night longer than the outward passage. I much regretted my 

 want of opportunity to visit likewise the more important 

 northern part of that most interesting island, but should be 

 happy to do so under favourable circumstances, as no doubt 

 there we should meet with a decided, and perhaps highly 

 interesting, arctic fauna. 



My shells have been kindly verified by J. Gwyn Jeffreys, 

 Esq., F.R.S., &c., who has obligingly assisted me in deter- 

 mining the species which had hitherto not come under my 

 notice. 



List of Mollusca 



dredged and collected in the Bay of Reykjavik, Faxa Fjordur, 

 Iceland, in 20 to 36 fathoms (ground mostly stony with sea- 

 plants, in parts muddy sandy), in July 1872, by T. A. Ver- 

 kriizen. 



1. Anomia ephippium, Linne. Small; from between roots of sea- 

 plants. 

 2. , var. squamula, L. Small ; from leaves of sea-plants. 



3. Pecten islandicus, Miiller. Not plentiful, and difficult to obtain. 



4. Mytilns edulis, L. Abundant and common. 



5. modiolus, L. Eather plentiful ; occasionally very large. 



6. , var. ovata, Jeffreys. Now and then met with. 



7. Modiolaria corrugata, Stimpson. The young plentiful, adults 

 rare. 



8. dlscors, var. semilcevis, Jeffr. (Icevigata, Gray). A fine live 



specimen, though it got crushed in the dredge. 



9. Crenella decussata, Montagu (cicercula, Moller). Abundant. 



10. NucuJa tenuis, Mont. Only five young specimens obtained. 



11. Leda pernida, Miill. Moderately plentiful ; large specimens and 

 adults rarer. 



12. Axinus Jlexuosus, Mont. Sparingly. 



13. , var. Ootddii, Philippi. More plentiful. 



14. Cardlum echinatum, L. Rather scarce ; adults of a thinner 



texture and smaller than British specimens. 

 15. fasciatum, Mont. Not common. 



16. islandicum, L. Young and middle sizes pretty numerous, 



adults scarce. 



17. grbnlandicum, Chemnitz. Young and middle sizes pretty 



numerous, adults scarce. 



18. Cyprina islandica, L. Not common in the bay. 



19. Astarte sulcata, DaCosta, var. elliptica. Brown. Rather scarce ; 

 some approach the American variety of undata, Gould. 



