178 



flammulis perpaucis albidis longitudinaliter ornatd ; columelld tri- 

 plicatd; aperturtB fauce livido-castaned. 

 Conch. Icon.. Mitra, pi. 17. f. 129. 

 Hab. Senegal; Petit. 



A very characteristic species, quite distiact firom any hitherto de- 

 scribed. 



MiTKA IMPRESSA. Mitr. tcstd elongūtd, sub-Terebreąformi. longi- 

 tudinaliter subtiliter costellatd, costellis lavigatis, 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. 



Hab. .? 



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 

 ivliitish longitudinal ribs, each whorl being encircled round the middle 

 ■with an indistinct row of spots of a darker red. 



Mitra solidula. Mitr. testd oblongo-ovatd, crassd, solidd, spird 

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

 fractibus convexis, l<evigatis, transversim exiliter striatis ; olivaceo- 

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

 superne armatd, ąuadriplicatd ; labro 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 solid 

 structure, the prominent development of the columellar plaits, the 

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

 lip. 



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

 acutd ; anfractibus Icevigatis, longitudinaliter costatis, costis tu- 

 midis, in/erne evanidis ; livido-olivaced, balteo unico angusto cin- 

 gulatd, costis olivaceo-lulescentibus ; columelld guadriplicatd ; labro 

 leviter sinuato; apertura fauce pallidk lividd, striatd. 



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-fxiscd, plicis albis ; columelld concavd, callositate armatd, 

 guadriplicatd; labro peculiariter planulato, superne canaliculato, 

 intus crenulato. 



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



Hab. Isle of Johanna, Mozambiąue Channel ; Hennah. 



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



