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PROCEEDINGS OF THE NATIONAL MUSEUM. 



VOL. 53. 



rounded. Aperture very elongate-ovate; posterior angle very acute; 

 outer lip pinched immediately below the summit, and shghtly pro- 

 tracted in the middle to form a short, claw-like element; inner lip 

 stout, almost straight, reflected over and appressed to the attenuated 

 base; parietal wall covered with a moderately thick callus. 



Professor Adams collected five specimens at Taboga Island, in the 

 Gulf of Panama. The type and two of these are in the collection of 

 Amherst College, Amherst, Massachusetts. The type has lost proba- 

 bly the first three whorls. The 10 remaining measure — length, 10.4 

 mm.; diameter, 2,7 mm. A younger specimen of 12 whorls meas- 

 ures — length, 8.7 mm.; diameter, 2.3 mm. 



MELANELLA (MELANELLA) RANDOLPHI Vanatta. 



Plate 37, fig. 4. 



Eulima randolphi Vanatta, Proc. Phila. Acad. Nat. Sci., 1899, p. 256, pi. 11, 

 figs. 13, 14. 



Shell moderately large, rather broadly conic, straight, polished, 

 marked by^ exceedingly fino lines of growth and scarcely perceptible 

 microscopic spiral striations; bluish white, except where the dry ani- 

 mal within shines through the shell, there it appears light brown. 

 Nuclear whorls, scarcely differentiated from the succeeding turns; 

 post-nuclear whorls, moderately well rounded, separated by a slightly 

 impressed suture. Periphery of the last whorl, well rounded, base 

 rather short, moderately well rounded. Aperture oval; posterior 

 angle acute; outer lip thin, drawn slightly forward in the middle be- 

 tween the posterior angle and the base; parietal wall covered by a 

 thin callus. 



The type and six specimens (Cat. No. 73729), Philadelphia Acad- 

 emy of Natural Sciences, were collected by Mr. Randolph at Una- 

 laska, Aleutian Islands. The type has 9 whorls and measures — 

 length, 7 mm.; diameter, 2.6 mm. 



The following specimens have been examined : 



' 1 type. 



