194 BULLETIN OF THE 



an elongated pillar tooth similar in shape, and all have a slight denti- 

 form process on the colnmella. I possess a typical P. Ilebe from Mr. 

 Garrett, in which the color of the apex is centred in the pillar tooth, 

 and another in which the whole shell is a pale rose color. These are all 

 varieties of one species resulting from station and food jjlants. 



Since the above was written Mr. G. W. Tryon has called my attention 

 to four specimens of Partula in the collection of the Academy of Natural 

 Sciences received a long time ago from Mr. Pease, and labelled by him 

 P. bella Pse. The examples = P. Avianda Garr. Mss. = P. faha var. 

 This it would seem is the true P. bella Pse. Mss., so named long anterior 

 to the date of P. bella Pse. = P. Hebe var. in Patel's catalogue. 



P. hyalina Brod,, in half a pint, was uniform in size, some being thin- 

 ner and more hyaline than others, probably the result of food and age. 



P. lugubris Pse. In a three-pint lot, many examples exhibited the 

 usual white peripheral band ; a few almost white examples with a black 

 hand were also present. In the adult shell it is noticeable that these 

 bands are often concealed by the overlapping of the fifth whorl. I 

 possess a series of examples of this species which seems to point to the 

 fact that it and P. fusca, as usually found in collections, are young and 

 immature shells, the synonymy being such as I have indicated in my 

 Bibliographical Catalogue of the genus. 



P. Guamensis Pfr. In two quarts several light-colored examples oc- 

 curred possessing a narrow brown line at the periphery. Judging from 

 the figure of P. obesa Pse. (no locality being given), I suggest the proba- 

 bility that the latter = a depauperated specimen of the former. Some 

 examples of P. Gtiamensis are quite large, while others are much smaller 

 than Reeve's figures. I have not been able to find the type specimen 

 of P. obesa Pse.' in the Pease collection, and suppose it to have been 

 lost, as some of his types were broken in transit between Honolulu and 

 Boston. 



I think, when the animals of P. Guamensis, P. bulimoides, P. obesa, 

 and P. expansa are examined, they will be eliminated from the genus 

 Partula. 



P. dentifera Pfr., in two qiiarts, was very uniform in size, coloi', and 

 contour. It is a much smaller shell than P. formosa Pse. Mss., with a 

 greenish yellow epidermis and yellow apex. About one sixth of the 

 specimens exhibited a rose apex = P. Raiatensis Garr. Mss. The variety 

 styled P. decorticata Pse. Mss. consists of individuals of P. dentifera, in 

 which the epidermis has been denuded by the animals licking the shells 

 of each other after hybernation has ended. 



