Genus Latirus. 395 



costatis, costis rotundatis^ canali subrecurvd, aperturd intus 

 liratd^ columelld quinqueplicatd albescente. 



Long. 30 mill. 



Lat. 11.50 „ 



Hab. ? 



A very beautiful shell, more so than its nearest congener, 

 L. fastigium (Reeve), the comparison with which in this 

 respect is hinted at in the specific name. It differs from 

 this species in the more rounded whorls, greater regularity 

 of the longitudinal ribs, fewer whorls (there are nine in my 

 specimen of fastigium) and less slender attenuation of 

 form. 



I fancied I had, at one time, seen another specimen in 

 the National collection, but Mr. E. A. Smith assures me I 

 must have been mistaken. 



The type is in my collection. 



3. Peristernia mannophora, sp. nov. (Fig. 4), 



P. testd subfusiformi^ ochracedy anfractibus septeiHy angu- 

 latiSy longitudinaliter regulariter costatis, costis transversim 

 liratis, liris infra suturas dudbus^ ultimo anfractu tribuSy 

 nitid^ moniliformibus et albotuberculatis^ aperturd ovatdy 

 labro simpliciy columelld triplicatd. 

 Long. 20 mill. 

 Lat 8 



Hab. Madagascar. 



Though allied to the next species {P. hilaris), this little 

 shell is, in several particulars, quite different. The transverse 

 lirae are not so close nor so deeply sulcated between, and 

 the first lirse below the sutures are more irregularly beade(i 

 with necklace-like nodules, and the mouth is more ovate. 



Represented at present by a unique specimen, in the 

 National Collection, South Kensington. 



