Natural History of East Finmarh. 355 



8cal<iria obtusicostata (S. Wood), G, 0. Sars. 



Lceocochlis granosa, Wood. 



Cerethiopsis costulata, ilull. Lang Fiord, 30 fathoms ; Bog Fiord, 



20-30 fathoms. 

 Newtoniella metula, Lovcn. 

 Turritellopsis acicula, Stimpson. Vadso and Yaranger Fiord, in 



shallow water to 15 fathoms. 

 Trkhotropis borealis, Brod. & Sow. Lang and Bog Fiords and 

 also Lofoten, down to 80 fathoms. 



conica, Moll. 



Littorina littorea, Linn. Vadso, Lang Fiord, &c. 



rudis, Maton, var. grcenJandica, Mcill. Extremely abundant 



When found near or quite at high-water mark on rocks it is 

 of smaller size than when living lower down, and at the same 

 time more richly coloured. The colour is very variable : pure 

 ■white ; white banded with black or brick-red ; grey ; grey 

 mottled with dispersed yellow spots ; black ; black banded 

 with white, A form taken in Bog Fiord has the spire more 

 elevated than usual, and corresponds to our English var. 

 tenebrosa. The surface of the shell is usually smooth or 

 sculptured only with slightly elevated spiral ridges. At Vardo, 

 however, a large variety occurs which is girt with strong spiral 

 ribs, and is quite indistinguishable from Littorina sitchana, 

 Philippi, from Vancouver and the Behring Sea. It is figured 

 by Sars, Moll. Eeg. Arct. Norv. pi. ix. fig. 10. 



* obtusata, Linn. Occurs of quite the normal British form and 



appearance at Svolva)r, Lofoten. In East Finmark it gives 

 place to the following very remarkable varieties : — 



var. pcdliata. Say, Sars, pi. ix. fig. 9. Tromso, Vardci, 

 Vadso, &c. 



forma elaiior, Sars, lA. xxi. fig. 19, has the spire so much 

 elevated that it has the shape of L. rudis ; it occurs between 

 tide-marks not far from low-water mark at Vardo. 



forma coarctata, Sars, pi. xxi. fig. 20. This extraordinary 

 shell occurs with the last at Vardo, and is indeed an extreme 

 form of forma elatior, with which, and with iiuUiata of 

 ordinary form but of large size, it is found. 

 Lacuna pcdlidida. Da Costa. Tide-marks, Vadso. 



divaricata, Fabr., var. solidula, Loven. Vadso and Bog and 



Klosterelv Fiords. 



var. frigida, Lovcn. Klosterelv Fiord. In both these 

 varieties the specimens have been compared with cotypes 

 received from the late Professor Loven. 

 Skenea planorbis, Fabr. Vadsci ; Klostcrelv Fiord and Svolvaer. 

 Hydrohia minufa, Totten. 



