TERRESTRIAL MOLLUSCA INHABITING SOCIETY ISLANDS. 73 
Mooreana, elongata and lineata, var. strigosa, only. But after passing Oahumi, the 
home of the latter variety, we again find faniata, but nearly as variable as the eastern 
Opunohu shells, and mixed with the form known as strio/ata, Pse., with which it inter- 
grades. Here I found several unmistakable hybrids between strigosa and teniata. 
All the valleys between this latter location and the one nearest to Opunohu are 
inhabited by the typical form striolata, which scarcely differs from nucleola, except in 
being smoother and more variegated with stripes. In a large valley adjacent to 
Opunohu, we find these shells by thousands; they differ in being beautifully striped 
like strigosa. Here, again, it insensibly graduates into the typical teniata. Whether 
the inosculation takes place through hybrids or not is a difficult question to decide In 
looking over a large collection from the eastern part of Opunohu, I find some of the 
small forms are not dissimilar to the typical striolata, which has suggested the pro- 
priety of following Dr. Hartman in consolidating the three forms. 
The typical ¢eniata varies from abbreviate-ovate to elongate-ovate, more or less 
solid, scarcely shining, smooth or wrinkled with incremental strie, and the spiral 
incised lines are very fine, and crowded on all the whorls. The spire is more or less 
produced half the length of the shell, sometimes shorter or a trifle longer. | Whorls 
moderately convex, the last one convex or convexly rounded, frequently compressed in 
the back and right side, which gives it a faint biangular appearance. ‘The subvertical 
aperture, which is variable in size and shape, varies from subovate to oblong. ‘The 
peristome is more or less expanded, sometimes considerably so, moderately thick, 
slanting and labiated within. Columellar lip more or less tortuous, abruptly receding 
above, which gives it a nodulous appearance. About one in a hundred exhibits the 
parietal tooth. ‘The following measurements will illustrate the variability in shape:— 
Length 17, diam. 9, aperture (including lip) 94 mill. 
Length 17, diam. 8, aperture (including lip) 8 mill. 
Length 13, diam. 7, aperture (including lip) 8 mill. 
The color is also variable: white, straw-yellow, lemon-yellow, light orange, corneous, 
fulvous, various shades of brown, sometimes with darker strigations, and frequently 
spirally banded. The most common style of fasciation consists of from one to four 
narrow, more or less broken, fulvous or fulvous-brown bands on the body-whorl. 
Fulvous-brown examples, with two or three pale bands, are not so common. ‘The last 
appears to be Mérch’s type, which he incorrectly assigns to the Viti Islands. 
Pease’s striolata and nucleola exhibit the same coloration as the typical teniata, 
but are sometimes of a deeper brown, and the former is more conspicuously strigated, 
Dr. Hartman, on the authority of Pfeiffer, quotes P. peraffinis, Pse., which he adds 
to the synonymy of feniata. Ido not know any such species, and cannot find any 
reference to it in Pfeiffer’s Monographs. He also regards Reeve’s spadicea as identical 
with taniata. Both Reeve and Pfeiffer quote the Marquesas Islands as the habitat 
of that species, but Pease and Dr. Cox mention having received it from the Solomon 
