302 PYUAMIDELLA. 



flattened, suture deep, crenulated, frequently whitish, last whorl 

 with a distinct me'dian sulcus, aperture produced in front. 



Length, 22 mill. NorLh Australia, New Caledonia. 



The shell which is figured in the Thesaurus Conchyliorum as 

 P. gracilis, Brocchi (fig. 85), appears to be very similar to this 

 species ; the true P. gracilis is a Turbonilla and = T. lactea, 

 Linn. Issel identifies a Red Sea species with the figure of 

 gracilis in Kiener, but recognizes the distinction of that figure 

 from Brocchi 's species, and calls it P. Kieneri. 



P. CHEMNITZIANA, A. Ad. PI. 72, fig. 86. 



Narrowly elongated, white ; whorls numerous, rather flattened, 

 with angle at the suture, and on periphery of last whorl, aperture 

 small, columella two-plaited. Length, 9 mill. 



Viti Is. 

 P. GARRETTII, Try on. PI. 72, fig. 87. 



Whorls flattened, yellowish, with chestnut colored nebulous 

 longitudinal strigations, suture channeled, last whorl with a per- 

 ipheral sulcus ; columella three-plicate, the upper fold very 

 strong, lower ones approximate and more oblique. 



Length, 15 mill. Viti Islands (Garrett). 



P. CONICA, C. B. Adams. PL 72, figs. 88, 89. 



Whorls flattened, with deep channeled suture, which is some- 

 times slightly crenulated, periphery also channeled ; fulvous, 

 faintly banded with darker color; aperture produced below, 

 columella triplicate. Length, 13-15 mill. 



Florida, Panama, Mazatlan, Cape St. Lucas, San Diego, Cal. 



Described from Panama; P. variegata, Carp., from Cape St. 

 Lucas, etc., also answers to the description perfectly. I have 

 received -the same species from Sarasota Baj^, Fla., under the 

 erroneous name of P. tessellata, Ads. It was dredged there in two 

 fms. water by Mr. Henry Hemphill. 



P. hastata, A. Ad. (fig 8 ( ,)), from St. Elena, W. Columbia, is 

 another synonym; it is included by Morch in his West Indian 

 catalogue as a synonym of P. Candida, Meuschen. 



P. CANALICULATA, Sowb. PI. 73, fig. 90. 



Whorls flattened, yellowish, banded and spotted with chestnut, 

 with fine longitudinal white raised strigations, appearing like low 



