X appe;«dix. 



tlicr if should he placed here or in AmpuUaria, 

 nevertheless in those few particul.irs in which the 

 Paludina? differ from the Arapnllariae, this shell ac- 

 cords more nearly with the Paludina;. Locality un- 

 known. 



1070. PALUDINA BICOLOR. 



P. testa oblongo-conica, apice obtuso, anfractibus 

 eulxiuinis, convexiusculis, olivaceis, strigis qua- 

 tiior vel quinquc transversis, elevatis, fuscis orna- 

 ta : long. {2^ unc. hit. i^l unc. 



Of).s. From Canton. I have long known thi3 



.shell, but do not find it described anywhere. 



1089. AMPULLARIA MEGASTOMA. 



A. testa suhglobosa, longitudinaliter undulato-stri- 

 ata ; spirA hrcvissinia, depressa ; anfractu ultimo 

 maxinio, superne rotundato-angiilato ; umbilico 

 mininio, juxta labii columellaris medium posito ; 

 apertura amplissima, superne subangulata, infra 

 rotuiidatii : latitudine loiigitudinem fere a^quante. 

 O64. The only specimen of this singular shell 

 that we have seen ; it is about three inches long, 

 the same in breadth, and of a pale colour, with trans- 

 verse fuscous bands ; the inside is irregularly co- 

 loured with a brownish violaceous tinge. Locality 

 unknown. 



1092. NAVICELLA SUBORBICULARIS. 



N. test;! suborbiculari, cavitatc profundiore, vcrtice 

 subniarginali. 



Obs. This species nearly resembles N. elliptica : 

 its greater diameter is to its smaller as 5 to 4 : its 

 vertex is not quite marginal : it is white, with an 

 orange spot within the vertex, and it is externally 

 jnarkcd with triangulur white spots, whose inter- 



