128 OLEACINA. 



habitations des Vers Testaces, pp. 61, 202 (1817), type and 

 sole species G. olivacea Schum, - - 0. voluta Gm. 



Boltenia PFEIPFER, Nomenclator Heliceorum Viventium p. 

 7, 1881, based on the types of Oleacina Bolten and Glandina 

 Schum. ; first species 0. voluta. 



Shell oblong or fusiform-oblong, smooth or smoothish, oliva- 

 ceous or yellow, usually with long last whorl and short spire ; 

 embryonic whorls smooth; aperture long and very narrow 

 above ; columella concave, abruptly truncate at base ; outer 

 lip simple, arched forward in the middle. 



Type 0. voluta (Gm.). Distribution, Haiti and Cuba, 



While it is almost impossible to frame differential con- 

 chological definitions of Oleacina, Varicella and Euglandina, 

 yet the general aspect of the shells is characteristic; the 

 genera are apparently valid, and their recognition is neces- 

 sary to a clear idea of the relationships of the species. One 

 species of Oleacina is striate, 0. voluta; several Haitian forms 

 have varix-grooves, showing thereby a relationship to Vari- 

 cella and especially to Porto Rican species of the section 

 Lccvaricella. The soft anatomy is as yet insufficiently known, 

 but data on various forms may be found in the preface to 

 this volume. 



The references given above show that the name Glandina, 

 long in common use, is an absolute synonym of Oleacina. 

 Boltenia was proposed by Pfeiffer for the typical section of 

 Oleacina, and was expressly said by him to be equivalent to 

 typical Oleacina and Glandina ; therefore these names cannot 

 be used for Mexican or European forms or for the 0. oleacea 

 group, as some authors have done. 



Sections of Oleacina. 



OLEACINA s. str. Shell large, solid and opaque, the surface 

 finely, evenly striate. Type 0. voluta. 



L/EVOLEACINA n. sect. Shell rather thin, yellow, very glossy, 

 smooth or with a few grooves. Type 0. oleacea straminea. 



