MARINE MOLLUSKS — MACGINITIE 131 



are nodulous. The specimens from the east coast of North America 

 tend to be smaller than those from the Alaskan Arctic. 



One of the shells from Point Barrow (from 80 feet) is like a typical 

 A. middendorffiana (pi. 2, fig. 1), that is, with a short spire, whorls 

 rapidly increasing in size, with an obese body whorl, and weak axial 

 plications anterior to the suture. The two young specimens from 341 

 feet (pi. 2, fig. 2) have a spire like that of A. couthouyi, that is, with 

 strong axial ribs and spu-al cords, giving a nodulous appearance. The 

 others have a combination of characters of both A. middendorffiana 

 and A. couthouyi (pi. 2, fig. 3). 



It is probable that Dall's A. middendorffiana is synonymous with 

 Leche's var. laevior, in which event var. laevior has priority. 



Distribution: Admete couthouyi is cu'cumpolar: it has been re- 

 ported from north of Alaska, Canada, Europe, and Siberia, and from 

 many of the major northern islands. It occurs from Alaska south to 

 southern California and to Japan; from Baffin Bay and Greenland 

 south to New England; and from Spitzbergen south to the Faroes. 



Admete regina Dall, 1911 



Plate 5, figure 1 

 Admete regina Dall, 1911, p. 19.— Oldroyd, 1927, pt. 1, p. 156. 



A single, very recently empty shell of this species was dredged at 

 522 feet. It measures 36.6 mm. in height by 22.9 mm. in diameter. 

 The spiral sculpturing is largely worn ofl'. 



Other material examined: Four beach-worn specimens from Icy 

 Cape and 13 from Cape Prince of Wales, Plover Bay, the Pribilofs, 

 and the Kudobin Islands; 1 specimen from the Gulf of St. Lawrence, 

 1 from off Beachy Island, Labrador, and 1 young specimen from 101 

 fathoms from "Chebucto" Head (=Chedabucto ? Head, Nova Scotia). 



Discussion: Although only 20 specimens were examined, they dis- 

 played several variations. The specimen from off Beachy Island, 

 Labrador, and the one from the Gulf of St, Lawrence have mouths 

 that flare less than those of typical specimens; one from off the Kudobin 

 Islands has a less obese body whorl, a more tapered spire, and a rela- 

 tively longer and less flaring aperture. A sheU from Cape Prince 

 of Wales is unusually heavy. Two medium-small specimens from 

 Plover Bay have only 2 or 3 visible columellar plaits instead of 6, 

 and the one from Chedabucto Head has only 4 or 5. 



Distribution: Point Barrow southward to the Pribilofs and the 

 Aleutians (about lat. 56° N. and long. 161° W.); Labrador to the Gulf 

 of St. Lawrence. Point Barrow is a new locality. This species has 

 not been reported previously from the western Atlantic. 



