APPENDIX 
283 
Shuyak Strait, Afognak Island, Alaska. Length, 6.3 mm.; diameter, 
2.4 mm. 
This species is nearest related to Turbonilla (Pyrgolampros) new- 
combei Dali and Bartsch, which is known from British Columbia and 
Washington. It differs from the latter in being in every way more robust 
and in having the whorls more inflated. 
Turbonilla middendorfli Bartsch, 1927 
Proceedings of the United States National Museum, 70: 8; PI. 2, fig. 2. 
Shell elongate-conic, flesh-colored, excepting a broad band of bright 
chestnut brown which extends over the periphery and considerably anterior 
and posterior to this. Nuclear whorls two and one-half, forming a de¬ 
pressed helicoid spire, the axis of which is almost at right angles to that of 
the succeeding turns, in the first of which the nuclear spire is about one- 
sixth immersed. Postnuclear whorls rather high, appressed at the summit, 
marked by broad, low, rather closely spaced, almost vertical axial ribs, 
which are very feebly expressed on the early turns. Of these ribs there are 
18 on the third, 20 on the fourth and fifth, 22 on the sixth, and 24 on the 
last whorl. The spaces separating the ribs are only about one-half as wide 
as the ribs. In addition to the axial sculpture the whorls are marked by 
numerous, closely spaced, spiral striations. Suture moderately constricted. 
Periphery of the last whorl somewhat inflated. Base moderately long, 
inflated, marked by the feeble continuations of the axial ribs, which 
evanesce shortly after passing the periphery, and numerous, closely spaced 
spiral striations. Aperture rather large, posterior angle acute; outer lip 
thin, showing the external markings and color band within; columella 
slender, somewhat sinuous, slightly reflected over the base to which the 
posterior third is adnate; parietal wall covered by a thin callus. 
Type in United States National Museum, No. 362147. Type locality, 
Afognak Island, Alaska. Length, 6.4 mm.; diameter, 2.0 mm. 
Turbonilla eyerdami Bartsch, 1927 
Proceedings of the United States National Museum, 70:9; PI. 2, fig. 12. 
Shell large, elongate-conic, golden yellow, with a moderately broad 
band of pale chestnut brown at the periphery. Nuclear whorls decollated. 
Postnuclear whorls appressed at the summit which is narrowly shouldered, 
flattened in the middle, moderately constricted at the suture, marked by 
rather strong, regular and regularly spaced, axial ribs, which are slightly 
protractively slanting on the early turns, vertical in the middle, and slightly 
retractively slanting on the last whorl. Twenty-two of these ribs occur 
upon the first to the third turns, 20 upon the fourth to the seventh, 18 upon 
the eighth, 22 upon the ninth, and 30 upon the last whorl. These ribs are 
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