THE NAUTILUS. 



VOL. X. FEBRUARY, 1897. No. 10 



ON THE GENERIC POSITION OF BULIMUS GALEEICULUM MOUSS. 



BY H. A. PILSBRY. 



This species was described by Moussou in his Laud- und Susswasser- 

 Mollusken von Java, 1849, p. 34, from near Pardana, Java, from a 

 single specimen collected by Zollinger. In vou Martens' edition of 

 Die Heliceeu the species is placed in Geotrochus, with the Cingalese 

 forms later referred to Beddomea. Pfeiffer iu his arrangement of 

 the land snails in Malak. Bliitter for 1855, p. 162, makes galericu- 

 lii/n the sole species of a new section of Bulimi, Pseusopartula. 

 The name he later corrects to Pseudopartnla. In the Nomenclator 

 Hel. Viv. he includes with galericulum in Pseudopartula (which is 

 here made a subsection of Geotrochui), the New Caledonian species 

 grouping around B. sinistrorsus Desh. 



It is evident from this that B. galericulum is the type of Pseudo- 

 partula. On comparison with Ariophanta doherti/i Aldr., I find that 

 that species also belongs to the same group ; and here likewise must 

 be placed Helix nasuta Mete., which has the same conchological 

 features. As to the systematic place of Pseiidopartula, I am in 

 doubt. In the absence of information upon the soft anatomy, the 

 group might be placed either next to Papuina in He.licidce, or in the 

 Buliiiutlidce or the Zonitidce, although it is evident that it has no 

 affinity with the typical Ariophantas. Couchologically, it is well- 

 characterized by the trochiform, sinistral, obliquely perforate shell ; 

 thin in texture, milky subtranslucent, the surface with fine spiral 

 incised striae, apex smooth and blunt, aperture extremely oblique 

 and with well-reflexed peristome. The species are : 



