1862.] MR. A. ADAMS ON JAPANESE OBELISCIN^E. 235 



A nearly cylindrical species, with the whorls but very slightly en- 

 larged in the middle. 



18. SyRNOLA COLUMNELLA, A. Ad. 



S. testa subcT/lindraceo-subulata, ceiina, linea rufa spirali ad 

 suturas ornata ; anfraetihus normalibus W, convexis, ultimo 

 linea rufa transversa succincto ; apertura subquadrata, aniice 

 vix effusa ; plica parietali valida, jmstica. 

 Hab. Seto-Uchi ; Mososeki. 



This is an elongated subcylindrical columellar species, with nume- 

 rous convex whorls, and is of mu.ch larger dimensions than S. cylin- 

 drella. 



19. Syrnola d^dala, A. Ad. 



S. testa subulata, in medio tumidula^ lactea, nitida, linea pallida 

 fulva transversa ornata ; anfractibiis normalibus 7,planis, lovr/i- 

 tudinaliter substriatis, intus liratis, anfractu ultimo elonyato 

 ad basin rotundato ; apertura oblonga ; p)lica parietali postica, 

 oblicpta ; labro margine arcuato. 



Hab. Uraga. 



A somewhat pupiform milk-white species, obscurely banded with 

 pale fulvous. 



Genus Styloptygma, A. Ad. 



Testa utiinque constricta, jnipiformis, elongata, anfractibiis varie 

 sculptis, plerumque Icevibus. 



In this division I have grouped together all the Japanese species 

 of Syrnola which assume a pupoid form or Clausilia-like aspect. I 

 originally founded the group on Monopttygma stylinum, A. Ad. (Proc. 

 ZooL Soc. 1851, p. 224) ; but a more extensive knowledge has en- 

 abled me to modify somewhat the original diagnosis so as to include 

 a wider range of species. 



1. Styloptygma pupiforme, A. Ad. 



Rissoa (Goniostoma) pupiformis, A. Ad., Annals, 1860, v. 411. 

 Hab. Mino-Sima. 



2. Styloptygma t^niatum, A. Ad. 



S. testa elongata, clausiliiformi, in medio twnida, tenui aid epider- 

 mide subfusca fugacea obtecta, zonulis ritfis tr ansver sis ornata ; 

 anfractibiis normalibus 7, planatis, longitudinaliter strigulatls, 

 suturis profundis ; apertura ovata, antice dilatata; labia incras- 

 sato, antice subplanato, plica parietali obliqua ; lahro intus 

 simpliei. 



Hab. Takano-Sima. 



A very delicate and prettily banded species, of Clausilia shape, and 

 with the whorls longitudinally strigose or strigulate. 



