1920.] NATURAL SCIENCES OF PHILADELPHIA. 309 



ture is rather wide below, posteriorly channelled, the outer lip re- 

 tracted a little above. Inner Up calloused, a little elevated. No 

 columellar fold. 



Length 29.5, diameter 6.9, aperture 7.5 mm. Twelve whorls. 



Off Honolulu, 6 to 8 fathoms. D. B. Langford. 



A form from Kaneohe Bay in 4 fathoms is much larger, length 

 37.3, diameter 9 mm. 



This species is closely related to T. cerithma Lam., but differs in 

 having all of the whorls ribbed. The Honolulu specimens are 

 stained with iron. T. affinis Gray differs by the interstitial sculp- 

 ture. 



Terebra dussumieri hiradoensis n. subsp. 



The shell is similar to T. dussumieri in form, but differs by the 

 smaller number of longitudinal ribs, which are wider and more 

 widely spaced, about 17 on the penult whorl. 



Length 55, diameter 11 mm. 



Hirado, Hizen, Japan. Type 81994, A. N. S. P. 



X. MiTRA AND VeXILLUM 



W. H. Pease described several forms about which little is known. 

 His notes on various Hawaiian species were published in the Ameri- 

 can Journal of Conchology, III, pp. 212-215, 233, 271; IV, pp. 119- 

 121; V, 85. 



Mitra mitra (L.) {VoJuta mitra episcopalis L.) has been taken in 

 the material dredged from Honolulu Harbor, l)ut no specimens are 

 at hand for comparison mth those of other localities. 



Partial Key to Hawaiian Species of Mitra and Vexillum. 



I. Mitra. Shell smooth, finely striate, or with spiral punctured 

 lines; throat not lirate. 



1. Shell with spiral series of spots on a light ground 2 



Shell uniform or otherwise marked 3 



2. Six spiral series of orange spots; large, the last whorl smooth. 



M. mitra (L.). 



Three irregular series of brown (tawny) spots; finely striate 



spirally throughout ; outer lip thin near the upper insertion, 



elsewhere rather thick and smooth, a low swelling behind 



it. 6 plaits; base recurved. Aperture longer than in M. 



ustulata Rve.; 50x15, aperture 26 mm. 



M. kamehameha n. sp. 



3. Suture crenulated by a series of white tubercles 4 



Suture even or nearly so q 



