486 Zoological Society, 



A very characteristic species, quite distinct from any hitherto de- 

 scribed. 



MiTRA iMPRESSA. Mitv. testd cloiigatd, sub-Terebrceformi, longi- 

 tudinaliter subtiliter costellatd, costellis Icevigatis, interstitiis trans- 

 versim peculiariter impresso-sulcatis ; fuscescente-rubidd, macula- 

 rum serie unicd subindistinctd cingulatd, costellis albidis ; colu- 

 melld quinqueplicatd, basi leviter recurvd. 

 Conch. Icon., Mitra, pi. 17. f. 130. 



Hah. ? 



A truly interesting species, of which this is the only specimen I 

 have seen. It is of a deep brick-red colour, covered with close 

 whitish longitudinal ribs, each whorl being encircled round the middle 

 with an indistinct row of spots of a darker red. 



Mitra solidula. Mitr. testd oblong o-ov aid, crassd, solidd, spird 

 brevi, obtusd, prope apicem subtilissime concentrice sulcatd ; an- 

 fractibus convexis, Icevigatis, transversim exiliter striatis ; olivaceo- 

 fuscd, plicis albis ; columelld concavo-expansd, callositate albicante 

 supern^ armatd, quadriplicatd ; lahro peculiariter planulato, su- 

 perne canaliculato, intus crenulato. 

 Conch. Icon., Mitra, pi. 18. f. 133. 



Hab. Island of Corrigidor, bay of Manila (found under stones at 

 low water) ; Cuming. 



This is a species of an interesting group of shells, of which the 

 Mitra Ziervogeliana forms the type, distinguished by their ^olid 

 structure, the prominent development of the columellar plaits, the 

 presence of a callosity, and the peculiar flattened surface of the outer 

 Up. 



Mitra livida. Mitr. testd subquadrato-ovatd, spird breviusculd, 

 aculd ; anfractibus Icevigatis, longitudinaliter costatis, costis tu- 

 midis, inferne evanidis ; livido-olivaced, balteo unico angusto cin- 

 gulatd, costis olivaceo-lutescentibus ; columelld quadriplicatd ; labro 

 leviter sinuato; aperturce fauce pallide lividd, striata. 



Conch. Icon., Mitra, pi. 18. f. 134. 



Hab. ? 



I am much indebted to M. Deshayes for the loan of this very in- 

 teresting species, of which I know no other specimens. 



Mitra choava. Mitr. testd ovatd, solidd, glabrd, spird brevi; ni- 

 gricante-fuscd, plicis albis ; columelld concavd, callositate armatd, 

 quadriplicatd ; labro peculiariter planulato, superne canaliculato, 

 intus crenulato. 

 Conch. Icon., Mitra, pi. 18. f. 135. 

 Hab. Isle of Johanna, Mozambique Channel; Hennah. 

 The characters of the Mitra choava are very similar to those of the 

 Mitr(B solidula and anthracina ; each species may, however, be fully 

 distinguished by its diiFerence of form and other minor peculiari- 

 ties. 



Mitra anthracina. Mitr. testd acuminato-ovatd, spird acutd, 

 glaberrimd ; anthracind ; columelld subconcavd, quadriplicatd, cal- 



