THE NAUTILUS. 23 



posterior valve very small with a subcentral inconspicuous ver- 

 tex at the anterior third; anterior valve with nine, middle valves 

 with two, posterior valves with two slits, the interior lines of 

 which are marked by a row of minute pores; the middle of the 

 valves on each side of the median suture conspicuously porous 

 internally. Length in alcohol 8, maximum breadth 6 mm. 

 U. S. Nat. Mus. Cat. No. 383018. 



St. Paul Island, Bering Sea. 



This differs from the type of the genus S. brandtii Midden- 

 dorff in color, form, characters of the girdle and depression of 

 the body; S. brandtii has nine slits in the posterior valve which 

 is proportionately larger. If additional specimens confirm its 

 peculiarities, S. multicolor may perhaps form a special subdivis- 

 ion of the genus. 



A NEW SPECIES OF PYRAMIDULA FROM ALABAMA AND NOTES ON 

 P. CUMBERLANDIANA WITH NEW VARIETIES. 



BY GEO. H. CLAPP. 



PYRAMIDULA PICTA n. sp. PI. I, Fig. 4. 



Shell thin, the color markings showing through, broadly 

 umbilicate, the umbilicus dome-shaped, exhibiting all of the 

 whorls to the apex and about one-fourth the diameter of the 

 shell;' whorls very convex above and below with a sharp per- 

 fectly smooth, white carina; apex delicately granulated for nearly 

 a complete whorl before the ribs begin to show, first 2^ whorls 

 rounded then a distinct ribbed carina is formed and the ribbing 

 continues, getting gradually weaker and finally disappearing on 

 the penultimate whorl. There is a distinct impressed line 

 above the carina on the upper whorls. Ribs weak and almost 

 obsolete on the body whorl. Body color a delicate cream tint 

 with irregular, chocolate-brown blotches which stop at the 

 carina; below a row of squarish blotches immediately below the 

 carina and a second row of narrow flame-like markings extend- 

 ing, faintly, into the umbilicus. Lip thin; aperture very ob- 

 lique, much wider than high. Whorls 6. 



