1905.] NATURAL SCIENCES OF PHILADELPHIA. 789 



of Hawaii (Dr. B. Sharp) ; Fiji Islands (A. Garrett) ; Flint Island ( Voy) ; 

 Kikaigashima, Osumi, in the Riukiu chain (Hirase). Types No. 

 58,193, A. N. S. P., from Oahu. 



This species varies widely in the degree of development of the longi- 

 tudinal folds, and especially in the sculpture of the major spiral cords, 

 which may be either smooth, slightly granose or rather strongly so. 

 The contour of the shell is also subject to some variation. C. papillosum 

 Sowb. {Thes. Conch., II, p. 876, PI. 184, fig. 215) is apparently related to 

 nesioticum, but differs in sculpture and coloration. 



It seems to be a common species over a large part of the Indo- 

 Pacific life-area. 



