ODHNER, MARINE 3I0LLUSCA OF ICELA>JD 



I. Catalogue of species obtained. 



[Abbreviations : fms = fathoms ; 1. = length ; max. = maximum ; 

 sp(s). = specimen(s) ; j = dead.] 



Chtetoderma uitidulum Loven. 



Reykiavik, 8 fms, stones, 2 sps., max. 1. 70 mm. — New 

 to Iceland. 



Lophyriis albus (Linné). 



Arnanes, 25 fms, 10 sps., max. 1. 8 — Berufjord, 3 fms, 

 ebb, 1 sp., 1. 11; D:o 7 — 13 fms, roeks, many sps., max. 1. 8 

 — Hofsos, 40 fms, clay, 2 sps., max. 1. 8 — Raufarhofn, 40 

 fms, 1 sp., 1. 7 — Reykiavik, 8 fms, stones, 2 sps., max. 1. 

 ca 8. — Part of the specimens belongs to var. infuscata Sparre 

 ScHNEiDER. — Chiton cinereus,m.ex\tioY\eå by Jeffreys, citing 

 Torell, besides Ch. albits from Iceland does not occur in 

 the coUections. 



Boreochiton marmoreus (Fabricius). 



Arnanes, 25 fms, 9 sps., max. 1. ca 13 — Berufjord, 9 — 13 

 fms, many sps., max. 1. ca 16 — Bjarnanes, 15 — 30 fms, 

 corals, 12 sps., max. 1. 17 — Raufarhofn, 35 — 40 fms, 5 sps., 

 max. 1. ca 20. 



Boreochiton niber (Lowe). 



Arnanes, 25 fms, 4 sps., max. 1. 8 — Berufjord, 3 fms, 

 ebb, 8 sps., max. 1. ca 12 — Bjarnanes, 15 — 30 fms, corals, 

 18 sps., max. 1. ca 11 — Reykiavik, 8 fms, stones, 2 sps., 

 max. 1. ca 10 — Thistilfjord, 10 — 16 fms, clay mixed with 

 sand, 1 sp. 1. 10. — Mentioned by Jeffreys, citing Torell. 



Xacella pellucida (Linné). 

 Reykiavik, 8 fms, stones, 1 sp. 1. 9,8. 



Acmaea testudiiialis (Muller). 



Fig. 20— 2 L 



Berufjord, 3 fms, ebb, many sps., max. 1. 28; the smaller 

 specimens with the apex far anteriorly: 1. 7, apex from the 



