196 BULLETIN OF THE JVIUSEUM OF COMPARATIVE ZOOLOGY. 



exceeded in number by the banded variety = P. sinistrorsa Pse. jSIss. 

 All the latter were sinistral, and very few of the former were dextral. 

 From the small number of dextral, as compared with the large number 

 of sinistral examples in the lot, it would seem that tlie sinistral form in 

 this species is the rule and not the exception, as obtains in some other 

 species of Partula. 



P. bilineala Pse., in a half-pint of examples, was shown to be a dis- 

 tinct and beautiful species. 



P. radiata Pse. Mss. In one quart of this species about twenty 

 banded specimens occurred which = Mr. Pease's type. The light-col- 

 ored and striated examples, which Mr. Pease distributed as P. compressa 

 Pfr., predominated. This shell and P. approximata Pse. possess the 

 keyhole aperture, with a slight carina at the periphery. The latter 

 feature varies in difterent examples. I can see no difference in these 

 two varieties of terrestrial shells from Raiatea, except that in P. radiata 

 the oblique lines of growth are more coarse than in P. approximata, and 

 the latter is somewhat darker in color, which in some of the varying 

 species of Partula (more especially in the terrestrial varieties) is often 

 referable to station and food })lants. 



P. lineata Pse. = P. filosa Pfr. In one pint of this species from 

 Tahiti, the specimens were all dentate and uniform in size; some were 

 lighter in color than others, but all in a greater or less degree exhibited 

 the ash-colored filiform lines characteristic of the species. 



P. repanda, Pfr. was represented by one and a half pints. This pai'cel 

 was labelled by Mr. Pease "P. recta Pse. Mountains Nukahiva, Mar- 

 quesas." The variety P. repanda Pfr. predominated in numbers over 

 the variety P. recta. Dr. Pfeiffer, in his description of P. repanda, 

 quotes New Hebrides as the station for the species, but his localities 

 for Partula are so often incorrect or entirely omitted, that I have very 

 grave doubts of the correctness of this one. My examples agree with 

 the types of P. repanda, Pfr. in the British Museum. For a fartlier 

 exposition of the two varieties, see P. recta Pse. in my Bibliographic 

 Catalotrue of the Genus Partula. 



