220 AMERICAN JOURNAL 



slightly recurved ; lip strongly dentate ; columella ridged ; dark 

 rose red, encircled by a single white band, which is bordered 

 beneath by a dark reddish-brown line, sutures stained with the 

 same color. 



Remarks. — The above species is allied to C riihida, Hinds. 

 Its chief peculiarity is the canaliculation of the suture, which we 

 find on all specimens, from the young to mature age. The 

 longitudinal ribs are more numerous. 



Drillia lauta. Pease. — Plate 15, fig. 18. 



Description. — T. turrita ; aafr. in medio nodosis, ad suturas 

 late concavo-angulatis, nodis longitudinalibus, prominentibus ; 

 sinu lato, profundo ; canali lato ; flavo-castanea, anfr. ultimo 

 fasciis tribus albis cingulata, spira unifasciata, fasciis in medio 

 linea rufo-castanea cincta. 



Dimensions. — Long. 9, diam. 4 mill. 

 Habitat. — Paumotus. 



Shell turrited, whorls nodose on the middle, nodules rather 

 prominent, longitudinally disposed, beneath the sutures widely 

 concavely angulated, on the spire the angulation occupying one- 

 half of the whorls ; canal short, open ; sinus broad and deep ; 

 yellowish-chestnut, last whorl encircled with three white bands 

 and the spire with one, through the centre of which passes a line 

 of reddish-chestnut. 



Remarks. — The most beautiful species of the group repre- 

 sented by D. la^ta, Hinds, nodifera, Pease, nodulosa, Pease, &c. 

 We have several additional species, in too bad condition for de- 

 scription. 



Drillia exilis, Pease. — Plate 15, fig. 19. 



Description. — T. gracilis, Inevigata, elongata, subcylindrica ; 

 spira elongata, longitudinis testae dimidiam sequante ; anfr. sub- 

 planulatis, longitudinaliter plicato-costatis, costis parvis, confer- 

 tis, e suturas descendentibus ; apertura brevis ; canali lato, 

 brevi; rufo-castanea, costis, interdum interstitiis, pallide cinereis. 



Dimensions. — Long. 5|, diam. 2 mill. 



Habitat. — Tahiti. 



Shell slender, smooth, elongate, somewhat cylindrical, spire 

 long, one-half the length of the shell ; whorls nearly plane, 

 plicately ribbed longitudinally, ribs small, close, descending 

 from the sutures ; aperture very short ; canal short and open ; 

 reddish-chestnut, ribs and sometimes the interstices pale ash 

 color. 



