766 MR..W. HARPER PEASE ON TAHITIAN SUCCINEX, [Dec. 13, 
Partula elongata, Pse.=lineata, var., eod. [Closely resembles 
a large gracilis—P. P. C.] 
Melampus cinctus, Pse.=zonatus, Miihl., eod. 
— “ fuscus, Phil.,” Pse.=philippit, Kist., eod. 
Cyclostoma viridans, Pse., is a blanfordia. 
Hydrocena robusta, Pse.=Realia huaheinensis, Pfr., teste H. 
Cuming. 
elongata, Pse.= Realia scitula, Gld., eod. 
costata, Pse.=Realia taheitensis, eod. 
Truncatella cylindrica, Pse.=Taheitia scalaris, Mich., eod. 
Helicina cincta, Pse. 
—— rubicunda, Pse. =maugere, Gray, eod. 
bella, Pse. 
rufescens, Pse.=rolvii, Pfr., eod. 
lenticulina, Pse.=solidula, eod. 
straminea, Pse.=pisum, Phil., eod. 
picta, Pse.=articulata, Pfr., eod. 
faba, Pse. 
discoidea, Pse. =albolabris, Jacq., eod. 
tenuiuscula, Pse. 
turbinella, Pse. 
subrufa, Pse. 
“©? multicolor,” Pse. 
“<7 inconspicua,” Pse. 
“2? vescoi, Dohrn,’”’? Pse.=haulieinensis, eod. 
|| | 
=minuta, Sby., eod. 
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5. REMARKS ON THE SPECIES OF SUCCINEA INHABITING THE 
TauiT1AN ARCHIPELAGO, wiTH DrscrRIPTION OF A NEW 
Species. By W. Harrver PErAse. 
Nine species of the above genus have been described from the 
islands of Tahiti and Eimeo, viz. S. procera, Gld., S. infundibulifor- 
mis, Gld., S. humerosa, Gld., 8. pudorina, Gld., S. modesta, Gld., S. 
tahitensis, Pfr., S. pallida, Pfr., S. gouldiana, Pfr., S. papilluta, Pfr. 
Having had the opportunity of examining a large collection from 
every part of the several islands, we learn that the same general type 
prevails over all, and extends even to the groups west. There are, 
however, characters peculiar to the species on the several islands 
which serve to distinguish them. Of the described species we con- 
sider S. humerosa, Gld., the same as S. tahitensis, Pfr. It is the 
most common species at Tahiti, and abounds on all parts of that 
island. From its wide distribution, it varies much in colour and 
shape. It is, however, the only species perceptibly angulated. The 
transverse furrows noticed by Dr. Gould occur on about one speci- 
men in five; the angulation the same. S. humerosa should be con- 
sidered the type, as the paler variety, S. ¢tahitensis, is rarely met 
with. Another variety, quite white, which is rare, has not as 
yet been noticed. The S. pallida, Pfr., is evidently not from Tahiti. 
The “ perist. margine incrassato’’ would place it among the species 
