36 TriK NAUTILUS. 



excellence, but I have never heard of pearls being found in our 

 American shell ; the interior of the British shell is described by 

 Reeve as being rose colored or salmon with much iridescence and in 

 another place as having a bluish-tinted interior ; our shell has not 

 these colors. The two species look very much alike, but there are 

 differences to be observed in the appearance of the exterior as well 

 as interior of the valves. The British species is found only in 

 mountainous regions while ours is not so particular in its habitat. 

 It occurs in running streams in Maine, New Hampshire, Vermont 

 and Mass., and according to Gould is confined to the interior, and 

 never found near the sea coast. The only specimens ever found in 

 R. I. — some dozen or more — were obtained by a young lad of this 

 city. Master Eugene Austin, in Roaring Brook, Exeter, while on 

 a visit to his friends in that town in 1872. 

 (To be continued.) 



PUBLICATIONS EECEIVED. 



Ox Some Marine Invertebrata collected by Dr. S. M. Daw- 

 son in 1885, on the coast of British Columbia, by J. F. AVhiteaves, 

 (ex. Trans. Roy. Soc. Can. iv). Among the Gasterojioda and Pele- 

 cypods, Leptochiton cuncellatus, Bela violacea, Cancellarla circumcincta, 

 Admete viridula Pecteu alaskensis, Y^oldia thracceformis and Sipho 

 Verhruzeni are northern forms, new to the Vancouver district ; while 

 Solariella peramahilis, Barleeia subtenuis Limatula subuuricidata and 

 Ledci acuta are Californian shells, now for the first time reported so 

 far northward. Astarte undata and Eulima incurva, if correctly 

 identified, seem to be new to the fauna of the West Coast. Marga- 

 rita cidaris, of which a fine series was collected, was previously known 

 by a single specimen. Cadiilus aberrans and Leptochiton piinctatus 

 are described as new. Leptothyra sanguinea L. is reported as col- 

 lected at a numl)er of localities, and its distribution given as " Japan, 

 California and the ^Egean Sea." AVe have already shown that the 

 Mediterranean, Japanese and Californian shells belong to three per- 

 fectly distinct species ; the true L. sanguinea being confined to the 

 first named locality. To our Californian shell we gave the name L. 

 Carpenteri. The list is an interesting addition to our knowledge 

 of Vancouver mollusks. — H. A- P. 



Description of a New Species of Land Shell from Cuba. — 

 Vertigo Cubana. By W. H. Dall, Curator dept. of moll., U. S. Nat. 

 Mus. 1890, p. 1. This is a remarkable form of Vertigo. It is a 

 minute, oval shell. The surfiice strongly rilibed, aperture bearing 

 lamellre. The author compares it to the Sandwich Island Pupa 

 lyrata of Gould.— H. A. P. 



