200 PROCEKDINGS OF THE MALACOLOGICAL SOCIETY. 



described from an extreme variety of tliis very variable shell. ^ 

 Mr. G. Hirase, in whose catalogue of Japanese marine MoUusca 

 lapillus finds no place, has supplied me with a sufficient number of 

 specimens oi freycinetii to illustrate the fact that freycinetii is nearly 

 as variable as lapillus itself, and at the same time to establish the 

 complete distinctness of the two species. Bunker's P. leysiana is 

 a form of freycinetii in which the spiral ridges are deeply cut by 

 longitudinal laminae or foliations. 



The geographical range of freycinetii appears to be as follows : 

 Behring's Sea, Aleutian Islands, and Sea of Ochotsk (Middendorff ) ; 

 Kamschatka (Deshayes, Chiron, Schrenck) ; West Saghalien, Castries 

 Bay, at Wjachtu and Dui, East Saghalien, at Manue (Schrenck) ; 

 Urup (Middendorff, as lapillus, L.) ; Etrup orEtoro, and Kunashiri in 

 the Kurile Islands (Coll. A. H. C.) ; N. Yesso, at Teshiwo (as saxicola, 

 Val., teste Pilsbry), Kushiro and Hidaka (Coll. A. H. C); S. Yesso, 

 Hakodate (Schrenck); N.E. Nippon, the southernmost locality I know 

 (Stiinpson). Eor some unexplained reason, //•^ycme^iV does not occur 

 in Pilsbry's catalogue of Japanese marine MoUusca. 



No satisfactory record exists of the occurrence of P. lapillus on any 

 part of the west coast of North America. Cooper's P. lapillus is 

 emarginata, Desh. (see p. 203). 



Pakt II. In Neaectic Waters. 



P. lapillus is recorded as an inhabitant of Greenland by Fabricius 

 (33), Gould (40), Morch (85), Moller (85), G. 0. Sars (105), and 

 others, the majority only repeating Fabricius' statement. According 

 to Fabricius, " Tritonium lapillus habitat in littoribus arenosis : in 

 Sinu Nerrutiksok dicto e region e boreali colonise Friderichshaab 

 copiosum " (Friederikshavn is in about the latitude of South 

 Iceland). Posselt (101) remarks that it appears to be found fairly 

 locally, and that its possible range is from the extreme south to about 

 69° JS. lat., at Jacobshavn, where he found one specimen. The 

 majority of examples belong to the var. iinbricata, Lara. 



Drygalski (31), cataloguing the MoUusca of the Berlin expedition of 

 1891-3, did not find it at Karajak and Umanak Fiords, N. lat. 71°, 

 nor was it found by H.M.S. Valorous in 1875 at Godhavn on Disco 

 Island (Jeffreys). Professor Jensen writes to me: "The few speci- 

 mens in our [Copenhagen] Museum have no distinct locality, only 

 the collective name ' Greenland ', and tliey are all from old days ; in 

 modern times the species lias not been brought to us, and the last 

 expeditions have seen nothing of this species, nor have I found it 

 myself on my three journeys to Greenland. I have therefore some 

 doubts regarding this species as an inhabitant of the present 

 Greenlandic shores." It has never been recorded from East 

 Greenland. 



By the courtesy of Dr. J. Vernhout, I have had the opportunity 

 of examining the Greenlandic specimens belonging to the 'sEijks 



^ Deshayes, in his description (Eev. Zool. 1839, p. 360 ; Mag. Zool., ser. II, 

 i (Moll.), pi. xxvi, 2 figs., 1839), specially mentions the arched columella. 

 His locality is Kamschatka. 



