DIPLOMMATINA $. 7. 399 
Diplommatina ringens Pfr. in Malak. Bl. XXIII. 1876. p. 19. 
Habitat Peleliu insularum Pelew. 
ez. D. polymorpha (Palaina) 0. Semper. 
'T. sinistrorsa, breviter rimata, ovato-acuminata, tenuius- 
cula, albida, oblique confertim striata, intermixtis costulis 
sparsis elevatioribus; spira inflata, sursum attenuata, apice 
acuto; anfr. 8 modice convexi, quartus et quintus prominentiis 
irregularibus notati, penultimus turgidus, ultimus angustior, 
suleis nonnullis verticalibus incisus, antice lente ascendens; 
apertura subobliqua, truncato-rotundata, latere columellari pro- 
funde unidentata; perist. interruptum, concentricee striatum, 
breviter expansum, marginibus parallelis, subsinuatis, callo 
parietali junctis. — Long. 4, diam. 2!/,; apert. long. 1!/; mill. 
Palaina polymorpha O. Semp. in Journ. Conch. XIII. 1865. p. 292. (Nomen.) 
— — Crosse ibid. XIV. 1866. p. 349. t. 2. f. 7. 
-— -— Pütel Catal. p. 118. 
Diplommatina polymorpha Pfr. in Malak. Bl. XXIII. 1876. p. 19. 
Habitat Peleliu insularum Pelew. 
es. D. inflatula (Palaina) 0. Semper. 
'T. sinistrorsa, breviter rimata, ventroso-acuminata, tenui- 
useula, albida, regulariter et confertim oblique striata, sub- 
opaca; spira inflata, sursum attenuata, apice acuto; anfr. Y 
convexi, penultimus turgidus, ultimus angustior, tum inflatus 
et alte ascendens; apertura obliqua, truncato-oblonga, latere 
columellari profunde uni- (vel ex icone Crosseana bi-) dentata; 
perist. subeontinuum, superne subappressum, duplicatum, limbo 
externo expansiusculo. — Long. 3, diam. 1?/; apert. long. 
1!/, mill. 
Palaina inflatula O. Semp. in Journ. Conch. XIII. 1865. p. 292. (Nomen.) 
— —- Crosse ibid. XIV. 1866. p. 349. t. 2. f. 8. 
— — . Piütel Catal. p. 118. 
Diplommatina inflatula. Pfr. in Malak. Bl. XXIII. 1876. p. 20. 
Habitat Peleliu insularum Pelew. 
e9. D. pupa (Palaina) 0. Semper. 
T. sinistrorsa, vix rimata, subcylindrica, pupaeformis, te- 
nuis, confertissime et subtilissime striatula, sericeo-micans, al- 
bido-hyalina; spira subcylindrica, in apicem breviter conoideum, 
obtusum terminata; anfr. 6 convexiusculi, penultimus altissimus, 
