148 MICROSTELE. 



Miocene landshell marl, Palm Garden, Frankfurt a. M. ; also 

 Voeslau, Vienna Basin, in marine sands. 



MICROSTELE MARLE (de Morgan). Pupa (Pupilla) maria 

 J. de Morgan, Bull. Soc. Geol. de France (4), xix, 1919, no. 

 9, p. 315, fig. 10 (November, 1920). Faluns de Touraine: 

 Pont-Levoy (sabliere du vallon de Charenton). Near the 

 preceding but a little smaller, the palatal fold vestigeal, an- 

 gular lamella strongly developed. This bed is about syn- 

 chronous with Sansan. 



1. MICROSTELE MUSCERDA (Bens.). PI. 14, figs. 19, 20. 



Shell rimate, ovate-oblong, striatulate, corneous; spire 

 long, apex obtuse; whorls 5% to 6, a little convex, the last 

 one-third the length of the shell, slightly ascending. Aper- 

 ture ovate, three-toothed; peristome expanded, acute, the 

 margins converging, columellar margin dilated, whitish; one 

 parietal fold, one columellar, rather deeply placed, one de- 

 pressed, obtuse palatal tooth. Length 4, diam. 1.5 mm. 

 (Bens.). 



Ceylon: Cape Pedro, in old posts and on palmyra trees, 

 Borassus flabelliformis (Layard, type loc.) ; Baticalva (Pres- 

 ton) ; Jaffna (Linter). India: Erode (Beddome). 



Pupa muscerda BENSON, Ann. Mag. N. H. (2), xii, August 

 1853, p. 94. PFR., Monogr. Hel. Viv., iv, p. 680. HANLEY & 

 THEOBALD, Conch. Indica, 1876, pi. 160, f. 2. SOWERBY, 

 Conch. Icon., xx, Pupa, pi. 7, f. 56. Pupilla muscerda Ben- 

 son, GUDE, Fauna Brit. India, Moll., ii, 1914, p. 286. 



There is an angular tubercle or callus, not mentioned by 

 Benson. The parietal lamella is high, short and deep within ; 

 the palatal fold is tubercular, visible in a front view. A con- 

 siderable series shows this species to be rather constant in 

 form and teeth. Length 4.15, diam. 1.95, aperture 1.47 mm. ; 

 5% whorls, or a little smaller, length 3.6 mm. 



2. MICROSTELE IREDALEI (Preston). PL 14, fig. 18. 



Shell differing from L. chanlerensis in its blunter form, 

 more swollen whorls, deeper suture, more open umbilicus, 

 straighter columella, and narrower and more erect labrum; 



