16 STOMATELLA. 



w ith scalloped sutures ; last whorl descending anteriorly, very broad ; 

 aperture oval, finely sulcate within, nacreous, the predominant color 

 being silvery or pinkish ; columella a little expanded above, over a 

 minute umbilical chink, surrounded by a crescentic opaque white, 

 sharply defined tract. 



Alt. 13, diam. 19 mill.; aperture, breadth 12, oblique alt. 11$ 



mill. ; greater radius 13, lesser 6 mill. 



New Caledonia. 



S. mariei Crosse, Journ. de Conchyl. 1871, p. 329; 1872, t. 13, 

 f. 13. 



The measurements given by Crosse are: alt. 9£, diam. maj. 24, 

 min. 17 mill. The species is larger than S. sanguinea and differently 

 sculptured. 



A form of this species bearing the (unpublished ?) name of S. 

 Godeffroyi Dunker, is figured on pi. 1, figs. 12-14. It differs 

 slightly from the type, but probably is not even varietally distinct. 

 The animal is figured on pi. 22. and also in Proc. Phila. Acad. N". 

 S., 1890. The last reference includes a figure of the dentition also. 



S. decolorata Gould. PI. 51, figs. 12, 13, 14. 



Shell ear-shaped, depressed, rather rounded in outline, dead white 

 above, with spots of milk-white and blotches of pale sanguineous 

 especially near the suture ; whorls 4, forming an acute, moderately 

 elevated spire, somewhat crenulated at sutures ; surface conspic- 

 uously grooved, those above the periphery having 3 or 4 smaller 

 stride intervening ; beneath somewhat imbricated upwards, and 

 barred in the intervals by the lines of growth, which do not pass 

 over the ridges ; one-half the breadth of the base adjoining the col- 

 umella is plain, without striae, banded by a raised and milk-white 

 line ; a slight reflection of the columella against a minute perfora- 

 tion ; aperture transverse, rounded-oval, nearly circular ; interior 

 porcelain-white and shining. (Gld.) Alt. 13, diam. 22 mill. 



Island of Mangsi (-^Mangaiaf). 



S. decolorata Gld., Proc. Bost. Soc. N. H. iii, p. 73, 1848 ; U. S. 

 Expl. Exped. Moll., p. 210, f. 250. 



Evidently allied to S. mariei, etc. I do not know the locality 

 given by Gould. It may be Mangaia, one of the Cook Islands. 



S. orbiculata A. Adams. PI. 52, figs. 44, 45. 



Shell depressed, thin, with small acute spire; color greenish-gray, 

 with radiating streaks of reddish, splitting and broken into spots 



