362 



PROCEEDINGS OF THE ACADEMY OF 



[Nov., 



Grooves narrower, less deep; obsolete or weaker and more 

 widely spaced above the middle of last whorl; 13 to 14 mm. 

 long. Fossil, aromid Pearl Harbor P. pearlensis, n. sp. 



Pupa thaanumi Pils. 



Further specimens of this species confirm the characters of color 

 and sculpture, but show that it sometimes reaches a larger size; 

 and some specimens are broader with relatively shorter spire. Two 

 from Haena, Kanai, measure: 



Length 11.5, diameter 5.1 mm. 



Length 10, diameter 4.7 mm. 



Kauai: Haena. Oahu: Honolulu; Mokapu Point. 



Pupa pearlensis n. sp. Figure 1. 



The shell is similar in shape to P. thaanumi. It differs by the 

 larger size, the narrower, less deeply cut spiral grooves; above the 

 middle of the last whorl several grooves are lacking in typical speci- 

 mens; when present they are weaker and more widely spaced than 

 in thaanumi. No color is visible in the fossil specimens. 



Length 13.7, diameter 7.2 mm. Type. Near Waipahu. 



Length 14, diameter 6.8 mm. Near Aiea Station. 



Length 11.5, diameter 6 mm. Near Aiea Station. Young. 



Oahu: fossil in superficial deposits along the Oahu Railway in the 

 neighborhood of Pearl Harbor. The type lot is from the bank of a 

 taro patch on the west side of the railroad about half a mile west 

 of Waipahu Station. Also found east of Aeia Station, 6-10 feet 

 above level of the Eastern Loch (Pilsbry), and at Hoaeae (W. A. 

 Bryan). 



Fig. 1. — Pupa pearlensis, n. sp. 



Fig. 2. — Bullina scabra solida, n. subsp 



