1917.] 



NATURAL SCIENCES OF PHILADELPHIA. 



319 



shell is broader. Though larger, it has a whorl less than Watson's 

 species. 



Odostomia (Miralda) scopulorum Watson. Fig. 13. 



Odosiomia scopulorum Watson, Challenger Rep., Gastrop., p. 485, PI. 31, fig. 5. 



Reefs off Honolulu, 4 fathoms (Challenger). Hilo, Hawaii (D. 

 Thaanum) . 



The original figures are copied. The specimen measures 1.2 mm. 

 long, 0.5 wide, having 5 whorls. There is " a strong, oblique, deep-set 

 tooth about the middle" of the inner lip. 





a. 



1 



Fig. 13. — Odostomia scopulonim, after Watson. Shell X 35 and apex X 60. 



Mr. Thaanum's specimens agree well with the type description 

 and figures. 

 Odostomia (Miralda) paulbartschi n. sp. Fig, 1.5. 



North shore of Kahoolawe. Type No. 116163, A. N. S. P., coll. 

 by Pilsbry, 1913. Also beach east of Honolulu, No. 93940. 



The shell is tapering-oblong, white. The nuclear whorl is smooth, 

 convex, low, with depressed tip. Following whorls of the spire 

 have two large, rounded spiral ridges, bearing slightly oblique 

 nodes which are weakly connected across the median depression; 

 a narrow smooth cord revolving immediately above the suture. 

 On the last whorl the post-sutural cord continues at the periphery, 

 and there are three spiral cords on the base. The aperture is some- 

 what oblique. Outer lip scalloped. The columella is narrow, 

 terminating above in a small fold. 



Length 2.3, diam. 0.95, length of aperture 0.8 mm.; a trifle over 

 6 whorls. 



A single perfect example of this Miralda was found in beach debris 

 on Kahoolawe, and tw^o from near Honolulu. It is obviously dis- 

 tinct from 0. scopulorum Watson, the only related species described 

 from the islands. 



