314 Mr. E. A. Smitli 07i 



lati, ot ill interstitiis strils spiralibus squamulatis incrementique 

 lineis minute dccussati ; apertura ])arva, lor git. totius -j^^ ad- 

 aequans ; labrum pallidum, valde incrassatum, intua superne 

 inferneque tuberculo parvo munitum ; siuu3 levis, subsemicircu- 

 laris ; canalis brevis, angustus, ad basim truncatus. 

 Long. 5| mill., diam. 2^. 



Hah. St. Helena. 



This very pretty little species has very much the form of 

 P. quadrata^ Reeve, but is very different in sculpture and 

 colour. The three apical whorls, the lahrum, and usually 

 the lower extremity of the body-whorl are whiter tlian the 

 rest of the shell, which is of a pale yellowish horn-colour. 

 The reddish zone encircling the body-whorl a trifle below the 

 middle defines the whitish extremity and extends to the 

 labrum, upon which in fresh specimens it is darker than else- 

 where. The minute, microscopic, squamose cancellation 

 which generally is chiefly observable in the interstices between 

 the coarser sculpture is a good distinguishing feature. This 

 is a smaller and stouter species than P. gemma^ has more 

 sharply angled whorls, rather stronger sculpture^ and is diffe- 

 rent in form, the body-whorl being more contracted and 

 slender below the middle. 



Pleurotoma {Mangilia ?) granilirata. 



Testa elongato-subpyramidalis, sordide albida ; anfract. 7-8, primi 

 duo Iffives, convoxi, caeteri convexiusculi, costis subrectis 8 (in 

 anfr. ultimo fero ad basim continuis) instruct!, ot liris tenuibus 

 confertis granosis (quarum 2-3 in anfr. superioribus, et clrciter 

 12 in ultimo quam cceteris majores sunt) ubique cincti ; apertura 

 parva, pallida fuscesceus, longit. totius g paulo suporans; colu- 

 mella la?vis, labrum extra incrassatum, superne leviter siauatum, 

 intus dentibus parvis 4-5 munitum ; canalis angustus, brevis. 



Long. 5| mill., diam. 2. 



Hah. ? 



The spiral lirations which cover the entire surface are 

 beautifully minutely granulous. Of the four or five little 

 teeth within tlie labrum the upper one, which is situated just 

 below the slight sinus, is the largest. 



Pleurotoma [Claihurella) scabrata. 



Testa fiisiformi-ovata, lutesccuti-fusca, circa anfractuum medium 

 lineis lacteis 1-2 cincta ; anfract. 9, supremi 2-3 minute oblique 

 reticulati, caeteri mcdiocriter convexi, costis circiter 16 (in anfr. 

 ultimo fere ad basim continuis) instructi, incrementique lineis 



