132 

 3. Descriptions of fifty-two new species of the genus 



MiTRA, FROM the CuMINGIAN COLLECTION. 



By Arthur Adams, F.L.S. etc 



1. Mitra serotina, a. Adams. M. testd oblongo-fusiformi, 

 acuminatd, serotind ; spird productd, longitudinaliter plicatd, pH- 

 cis confertis, undulatis; transversim sulcatd, sulcis subdistantibus ; 

 aperturd antice dilatatd ; columelld quadripUcatd, basi contortd et 

 recurvd; labro intus lirato, margine recto, antice subangulato. 



Hah. Marquesas. 



A light orange species, with a produced spire, and the outer lip pro- 

 duced and rather angulated anteriorly. 



2. Mitra cratitia, A. Adams. M. testd oblongo-fusiformi, 

 alhidd, nitidd, liris elevatis transversis, acutis, et lineis elevatis, 

 longitudinalibus, decussatim ornatd; interstitiis subtilissinie lon- 

 gitudinaliter striatis ; aperturd intus aurantiacd ; columelld plicis 

 quinque instructd. 



Hab. South Africa. 



The shell from which the description is taken is worn, and not in 

 good condition, but it appears to be distinct from any species already 

 described. 



3. Mitra straminea, A. Adams. M. testd oblongo-fusiformi, 

 stramined; anfractibus planulatis, liris transversis rvgulosis, in- 

 terstitiis cancellatis, suturd subcanaliculatd ; aperturd oblongd, 

 antice subproductd ; columelld plicis quatuor, basi subrecurvatd ■ 

 labro intus Icevi. 



Hab. ? 



An oblong, transversely-ridged species, rather faintly cancellated 

 between the interstices. 



4. Mitra insignis, A. Adams. M. testd ovato-acuminatd ; spird 

 acutd, lavi, nitidd, albidd ; anfractibus planis, fascid angustd albo 

 fuscoque articulatd, ornatd; anfractu ultimo antice transversim 

 striato ; columelld sinuatd, biplicatd, antice incurvatd. 



Hab. Rains Island (Mr. Ince). 



This is a very peculiar form, reminding one almost of the genus 

 Pusionella of Gray. 



5. Mitra l^vis, A. Adams. M. testd oblongo-fusiformi, apice 

 acuto, IcEvi, nitidd, albidd; anfractibus planis, supremis cancel- 

 latis, ultimo fascid latd transversd, rufescenti ornato ; columelld 

 plicis quatuor, supremis magnis imbricatis. 



Hah. Zanzibar. 



A smooth OZii^a-shaped species, with a polished surface, and a red- 

 brown band blending into the white of the last whorl ; the plates of 

 the columella are imbricate. 



6. Mitra tigrina, A. Adams. M. testd oblongo-ovatd ; spird 

 crassiusculd, apice mucronato, rufo, albo strigosd; anfractibus 



