124 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 109 



elongated (pi. 15, fig. 2) and the cord may practically disappear on 

 the last portion of the last whorl, its location being indicated only by 

 a slight shouldering and by the nodes (pi. 15, fig. 7). An unusually 

 slender form with a very weak carina and without nodes is shown in 

 pi. 15, fig. 4. In the shortest-spired forms the aperture may be 

 nearly twice as long as the remainder of the shell (pi. 15, fig. 2). In 

 contrast to the nucleus of N. ventricosa and of A^. middendorffiana, 

 that of A^. heros is small and tapered. 



Distribution: MacKenzie River delta west and south to Bristol 

 Bay in the Bering Sea. Point Barrow is a new locality. 



Neptunea middendorffiana, new name 



Plate 14, figures 7-10 



Tritonium (Fusus) antiquum var. communis obsoletior forma elatior MiddendorfF, 



1849d, pt. 2, p. 461, pi. 5, fig. 2. 

 Chrysodomus solutus Dall, 1907, p. 154 (in part). — Oldroyd, 1927, pt. 1, p. 



236 (in part). (Not Buccinum solutum Hermann, 1781, pp. 52, 53, pi. 2. 



figs. 3, 4.) 

 Neptunea despecta Y. Hirase, 1907, p. 360 (in part). (Not Murex despecius 



Linnaeus, 1758.) 

 Neptunea vinosa (Dall), var., Kinoshita and Ishaya, 1934, p. 9, pi. 6, fig. 43. 



(Not Chrysodomus vinosus Dall, 1919.) 

 Neptunea soluta Kuroda, 1936, p. 185. — Kira, 1954, p. 55, pi. 27, fig. 18. 



(Not Buccinum solutum Hermann, 1781.) 



Shell medium for the group, slender, with 6.25 gradually expanding 

 whorls, including 2 nuclear whorls. External surface of shell reddish 

 brown, with fine grajdsh white longitudinal lines corresponding to 

 the incremental lines. Interior of aperture whitish, porcellaneous, 

 banded with brown at margin of external lip. Nuclear whorls broad, 

 white. Whorls of the shell characterized by a keel at the shoulder, 

 the keel beginning faintly on the first postnuclear whorl and becom- 

 ing increasingly heavier on the anterior whorls, located about two- 

 thirds the distance anterior to the suture, darker than the remainder 

 of the shell, with weak blunt or elongated nodules irregularly spaced. 

 Sutures appressed. Aperture fairly narrovN?^; external lip angular. 

 Columella nearly straight, parietal wall brown, internal lip white; 

 anterior canal short, moderately wide, and only slightly reflexed. 

 Nucleus brown, with grayish white incremental lines, showing 9 or 10 ' 

 major growth interruption lines. 



Dimensions: Holotype: height, 68.3 mm.; diameter, 40 mm.; angle 

 of spire, 57°. 



Type locality: About 4 miles off Point Barrow base, Alaska. 

 Depth, 175 feet. Bottom: gravel, small stones (haul containing sea 

 urchins — Strongylocentrotus drobachiensis) . Collected by G. E. Mac- 

 Gmitie, Oct. 14, 1949. 



