PARTULA, CAROLINE ISLANDS. 311 



panded, strongly thickened within. Columellar margin di- 

 lated above, deep within, as in P. guamensis. Length 22.3, 

 diam. 14.1, aperture 12.1 x 9 mm. 



Caroline Is.: Ualan (John Brazier), type no 4298 Carnegie 

 Museum. 



Partula rufa Lesson, HARTMAN, Proc. A. N. S. Phila. 1886, 

 p. 35, pi. 2, f. 15. H. H. SMITH, Ann. Carnegie Mus. i, 469, 

 no. 4298. 



Related to P. guamensis, from which it differs by the ab- 

 sence of distinct spiral lines on the last whorl, the less ex- 

 panded but more thickened lip and more contracted aperture. 

 It was identified by Dr. Hartman with P. rufa Lesson, but 

 that is a smaller, especially narrower shell. 



The type specimen was collected by John Brazier "on the 

 banks of the Leila river, Chabroul Harbor, Ouhalan or 

 Strong's Island," according to a letter from Brazier to Dr. 

 Hartman, written at Sydney, June 18, 1885. 



A second specimen in the Hartman collection measures, 

 length 21.5, diam. 14. aperture 11.7 mm. It is an old shell, 

 faded and broken. 



107. P. RUFA Lesson. 



This species resembles especially the preceding [P. ota- 

 heitana] , but the aperture is turned to the right. The spire is 

 less lengthened, more swollen, more conic. The last whorl is 

 proportionally larger. The aperture is more oval and less 

 contracted, and its peristome is not so thick. The color is 

 dirty red. Length 8, diam. 4 lines (Lesson). 



Caroline Is.: wooded hills of Ualan (Voy. Coquille). 



Partula rufa LESS., Voy. de la Coquille, Zoologie ii, p. 324 

 (1831) . Not P. rufa Martens or Hartman. 



Lesson's brief description indicates a shell resembling 

 P. guamensis in general features, but much smaller than any 

 other known species of the group, about 16 or 17 mm. long, 

 8 or 9 wide. It is hardly possible that the identifications of 

 P. rufa made by either Hartman or von Martens are correct. 

 This was also the opinion of Dr. 0. von Moellendorff. P. rufa 

 still awaits rediscovery. 



