1905.] NATURAL SCIEiSrCES OF PHILADELPHIA. 727 



of specimens from Giiran differs in having the last two whorls striate 

 throughout, the strise closer than on the conical upper portion of the 

 spire. This may be only individual variation. Eleven of the entirely 

 striate and fifteen of the typical specimens were taken. 



Siplommatina taiwanica suganiikeiensis n. subsp. 



Shell brownish corneous, more obese than D. taiwanica; last whorl 

 more ascending to the aperture, and more deeply constricted ; striation 

 finer and nearly even throughout, very weak; palatal plica very short; 

 basal angle more projecting. 



Length 3, diam. 1.7 mm., whorls 5^. 



Suganiikei, Taiwan. Types No. 89,966 A. X. S. Phila., from No. 

 1,364c of Mr. Hirase's collection. 



This form seems rather unlike D. taiwanica, and unless intermediate 

 specimens are found it will probably rank as a distinct species. Only 

 nine individuals were taken. 

 Diplommatina camara n. sp. 



Shell imperforate, cylindric below, conic above, pale orange or brown- 

 ish-yellow. Whorls 6, the first 4 regularly increasing, the next whorl 

 swollen, the last much smaller, especially as seen dorsally. First H whorls 

 smooth; following whorls of the cone sculptured with widely spaced 

 thread-like riblets, penultimate whorl with the riblets much closer, 

 last whorl smooth. Constriction rather deep, median above the mouth . 

 Palatal plica very weak and short. Aperture vertical, irregularly 

 rounded. Parietal callus moderate, with distinct edge. Peristome 

 well expanded, thickened within, wide, projecting at the junction 

 of the columellar and basal margins. Columellar lamella moderately 

 prominent, very short inside. 



Length 3, diam. 1.6 mm. 



Hotawa, Taiwan. Types No. 90,243 A. N. S. Phila., from No. 1,424 

 of Mr. Hirase's collection. 



This species differs from D. taiwanica, chiefly by its very small pala- 

 tal plica and the very short columellar lamella, which in taiwanica 

 ascends to the constriction. D. tokunoshimana differs from camura 

 in sculpture and the well-developed palatal plica. 

 Diplommatina prava n. sp. 



Shell cylindric below, conic above, imperforate, pale yellowish corn- 

 eous, the upper whorls often orange tinted. Whorls 6|, regularly 

 increasing to the penultimate, which is wider but not especially swol- 

 len; last whorl scarcely smaller, its last third making a long ascent 

 to the aperture. Sculpture of weak rather close and very fine thread- 



