HELIX-PAPUINA. 51 



Var. TUFFETII Lesson. PL 17, fig. 42. 



Has the contour of typical coniformis, but the color is a uniform, 

 intense blue-black ; lip bluish-white. 



" Makakabat," New Ireland. 

 H. SELLERSI Cox. PI. 15, fig. 75. 



Shell imperforate, trochiform, brownish-yellow, generally or- 

 namented with two very dark-chestnut, almost black, bands, more 

 or less wide, one above and one below the sub-carinated periphery 

 of the last whorl, having sometimes between them an opaque-white 

 band ; transversely rather regularly striated backwards, decussated 

 from behind forwards by rather irregular slightly waved propor- 

 tionally broadly separated strise, more distinct on the last two whorls 

 than at the apex of the spire, whorls 5, rounded, gradually increas- 

 ing in size, suture impressed, last whorl sharply depressed at its ter- 

 mination and flattened from the periphery to its insertion ; spire 

 obtuse ; aperture ovately lunate ; peristome white margined, slightly 

 everted ; columella very slightly dilated and adnate. 



Diam. greatest O78, least 0'56 ; height 0'60 of an inch. (Cox.) 



Guadalcanar Is.? Solomon Islands. 



H. sellersi Cox, P. Z. S. 1871, p. 646, t. 52, f. 9.? H. sellersi 

 DOHRN, Conchyl. Cab. p. 585, t. 172, f.9-11. 



(10) GROUP OF H. BRUMERIEN8IS. 



Imperforate, turbinate or trochoidal, the last whorl descending in 

 front. Surface spirally striate or having forward-descending wrinkles. 

 Lip more or less sinuous above, often vividly colored. Aus- 

 tralia, New Guinea, Louisiade Is. 



This group comprises a considerable variety of forms, but they 

 are so connected by intermediate species as to form a perfectly 

 natural assemblage. 



H. CHAPMANI Cox. PI. 1, fig. 13. 



Shell elevated-conic, imperforate, white ; the lip inwardly purple- 

 brown, at the edge deep red. 



Whorls 5J, a little convex, obliquely roughly and closely striated, 

 and sculptured with flexuous growth-lines. Last whorl obtusely 

 angulated in the middle, slightly convex beneath, shortly descend- 

 ing in front. Aperture oblique, irregularly sub quadrangular, white 

 within; peristome somewhat thickened and expanded, shortly 

 reflexed, the outer margin obtusely angulated a little above the 



