Zoological Society. 483 



logical matters cannot be lightly esteemed, I have described the Mi- 

 tree poJlta and crebril'irata as new and distinct species ; it must be 

 admitted, however, that I have felt strongly inclined to regard the 

 former as the Eastern analogue of the Mitra cbenus, smooth vurktrj, 

 of the Mediterranean, and the latter as the analogue of the Mitra 

 ebenus, ribbed variety, of the same region. 



Mitra vakiabilis. Mitr. testd oblongo-ovatd, medio subobesa, 

 l(Evigatd, transversim sttbtilissimt' punrtato-striatd ; lutescente- 

 oiivaced, iineis /iiscis capillaribus remotiugculis cinctd, anfractu 

 ultimo zona itnicd cccrulesceiite-albd medio oriutto ; columelld qua- 

 driplicatd ; aperturce fauce olivaceo-fuscit. 



Concli. Icon., Mitra, pi. 13. f. 95. 



Hab. Torres Strait (found under stones at low water) ; Dring. 



The variable character of this species consists in its being some- 

 times flaked or indistinctly streaked with bluish white. 



Mitra cylindracea, Mitr. testd ctjlindraceo-ovatd, tttrinque at- 

 tcnuatd, snlcis capillaribus puncturatis, st/per/ie remotiusculis, cin- 

 gulatd ; lutescenfe-olivaced, macuUs albis irregularibus infra sutu- 

 ras ornatd, anfractu ultimo in medio maculato-fasciato ; columelld 

 quadriplicatd ; aperturce fauce fuscescente. 



Conch. Icon., Mitra, pi. 13. f. 97. 



Hab. ? 



The painting of this shell is not much unlike that of the Mitra 

 variabilis. 



Mitra pullata. Mitr. testd fusiformi, spird acuminato-turritd ; 

 anfractibus superne subangulatis, transversim impresso-striatis, 

 longitudinaliter pUcato-costatis, costis superne ohtuso-vwcronatis ; 

 aurantio-lutcscente, lined subtilissimd fused cingulutd, anfractu 

 ultimo fascid latd nigricante-fuscd ornatd ; columelld quadriplicatd . 

 Conch. Icon., Mitra, \)\. 14. f. 102. 



Hab. Island of Ticao, Philippines (found on the reefs) ; Cuming. 

 The Mitra pullata is exactly intermediate between the Mitrcc bal- 

 ieolata and plicata, differing sufficiently from both to constitute a 

 distinct species. 



Mitra oleacea. Mitr. testd oblongo-ovatd, Bucciniformi, spird 

 brevi ; anfractibus convexis, leecigatis, epidermide corned olivaceo- 

 fuscd nitidd indutd ; columelld quadriplicatd, basi truncatd ; labro 

 in medio leviter contract o. 



Conch. Icon., Mitra, pi. 14. f. 105. 



Hab. ? 



There is a peculiarity in the form of this species which distin- 

 guishes it from any other of the Melania-like group. 



Mitra obeliscus. Mitr. testd acuminato-turritd, spird acutd ; an- 

 fractibus longitudinaliter costatis, costis angustis, crebris, inter- 

 stitiis impresso-cancellatis ; lutcscente-fuscd, lined unicd albd cin^ 

 gulatd ; columelld quadriplicatd, basi contorto-recurvd. 



Conch. Icon., Mitra, pi. 15. f. 107. 



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