OF CONCHOLOGY. 



43 



Succinea amphibia ? Stp., 1. c. 



On moist places, where grass grows under stones (Olafs.) 



Hobclabrb'kka, Laugarne, Stp. Offjord (Gudm.) Reikiavik 

 Tjorn (Stp.) 



Among specimens from the latter place were several with a 

 mandible like S. putris, with two small lateral denticles ; but I 

 cannot see any difference in the shell. 



13. LlMNiEA TRUNCATULA, Mull. 

 Var. spira gracilis. 



Alive in the hot sulphur waters of Kusevig (Stp.) 



14. LiMNiEA ovata, Drp., var. minor L. vulgaris, C. Pfr. 

 T. extus straminea, intus lactea. 



Long. 6 mm., lat. 4 mm. 



Laugarvas in hot water, 43° C. (Stp.) 



15. Limn^a peregra, Mull., var. L. geisericola, Beck, Index. 

 Langana, Reikiavik. Stp. The largest are 14 mm. long. 



Var. leviter umbilicata, flava intus alba. 



Reikiavik. (Stp.) 

 Planorbis rotundatus, Poiret. 

 PL leucostomus Millet. 



Tjorn 2 spm. (Stp.) 



17. Pisidium pullchellum, Jennyns. 

 Armadangur. (Stp.) 



18. Pisidium pusillum, Jennyns. 



With the preceding. The largest is 5 mm. long, 4| Jbigh. 



19. Pisidium personatum, Malm. 



Taxebujt. (Stp.) Considered a variety of the preceding by 

 Mr. Jeffreys. 



20. Pisidium pulchellum, Jennyns. 

 Armadangur. (Stp.) 



21. Pisidium nitidum, Jennyns. 

 Armadangur, Laugarne. (Stp.) 



The determinations are verified by Mr. Jeffreys and Dr. Malm. 



