1920.] NATURAL SCIENCES OF PHILADELPHIA. 373 



spiral girdles parted by impressed lines, and themselves weakly 

 striate spirally; deep brownish drab, every third or fourth girdle 

 yellowish, or in worn shells whitish; there being 8 or 10 of these 

 pale, narrow bands. The spire is extremely short and obtuse. The 

 aperture is obhque, of about equal width almost throughout, black- 

 ish brown deep in the throat, becoming pale or white within the lip. 

 The outer lip is very thick, bevelled, liver-brown, its outer edge 

 minutely scalloped, the inner edge set with 10 or 12 small teeth. 

 The columellar border is broadly flattened, vinaceous-brown with 

 pale inner edge. 



Length 14, diameter 9.5 mm.; length of apertm'e 12.3 mm. 



Length 13.6, diameter 9.6 mm. 



The operculum is liver-brown, long and narrow, widest above, the 

 nucleus (which is worn away) at the upper, outer extremity; the 

 outer margin arcuate, inner margin straight. 



It is near V. taeniata Powys, but smaller and wider in the upper 

 part. 

 Murex cyclostoma baldwiniana n. subsp. 



The shell is similar to M. cyclostoma Sowb. in having the faces of 

 the varices cellular, in the shortly oval aperture and sculpture of 

 strong encircling cords; but the specimens from two sources are very 

 much smaller. There are 5 cords on the last, 2 on the penult whorl 

 The nearly closed anterior canal is a little shorter than the aperture. 



Length 8.2, diameter 5.2 mm. 



Kailua, Kona coast of Hawaii (Bryan); Maui (D. D. Baldwin). 



Possibly distinct from M. cyclostoma, which is a much larger shell; 

 a longer series is needed to show whether the small size is constant. 



VANIKORO. 



The following species of Vanikoro are now known from the Is- 

 lands. For references see Smith, Proc. Malac. Soc. London, VIII, 

 104-117. 



Vanikoro semiplicata Pease. Hilo, Hawaii; Paumalu, Oahu; 

 Haena, Kauai. 



Vanikoro imhricata Pease. Hilo, Hawaii; Kaneohe Bay, Oahu. 



Vanikoro acuta (Reel.). Kaneohe Bay, Oahu; Haena, Kauai. 

 Originally described from Lord Hood's Island, on coral reefs. The 

 Hawaiian specimens appear to be quite typical. 

 Vanikoro hawaiensis n. sp. 



The shell is openly umbilicate, subglobose, with small, conic, acute 

 spire; white with the apex brown. Embryonic and nepionic 3 



