Zoological Society. 487 



lositate parvd, superne armatd -, lahro peculiariter planulato, SU' 

 perne leviter canaliculato , intus crenulato. 

 Conch. Icon., Mitra, pi. 18. f. 137. 



Hab. Island of Ticao, Philippines (found on the reefs at low water) ; 

 Cuming. 



Very closely allied to the Mitra solidula, but of a more elongated 

 form, with a smooth shining surface. 



Mitra robusta. Mitr. testd ovatd, crassd, spird brevi, subohtusd; 

 anfractibus tumidiusculis , transversim sulcatis, basin versus pra- 

 cipue, longitudinaliter concentrice plicato-rugosis ; rubido-fuscd ; 

 columelld concavd, quadriplicatd, callositate armatd ; labro incras- 

 sato, planulato, superne canaliculato, intus crenulato. 



Conch. Icon., Mitra, pi. 18. f. 140. 



Hab. ? 



This species partakes of the characters of the Mitrte Woldemarii 

 and Ziervogeliana in about equal proportions. 



Mitra pulchella. Mitr. testd acuminato -ovatd, spird subturritd, 

 longitudinaliter costellatd, costellis angustis, planis, confertiusculis, 

 basin versus subgranosis, transversim impresso-striatis ; aurantio' 

 lutescente, fascid purpurascente inter castas ornatd ; columelld 

 quinqueplicatd. 



Conch. Icon., Mitra, pi. 19. f. 142. 



Hab. Island of Barbadoes, West Indies ; Humphreys. 



The painting of this shell has a very pretty appearance. 



Mitra histrio. Mitr. testd subovatd, spird breviusculd, longitu- 

 dinaliter costatd, costis subobtusis, basin versus granulosis, inter- 

 stitiis transversim striatis ; vivide coccined, suturis nigris, nigro 

 interdum nebulosd, balteo albo angusto, balteoque nigro , cingulatd ; 

 columelld quadriplicatd. 



Conch. Icon., Mitra, pi. 19. f. 144. 



Hab. .? 



A gaily-coloured scarlet shell more or less banded and bedaubed 

 with black. 



Mitra rubritincta. Mitr. testd oblongo-ovatd, crassiusculd, acuth 

 acuminatd, transversim undique sulcata; albd, maculis grandibus 

 aurantio-rubris supra infraque seriatim nebuloso-tinctd ; columelld 

 quadriplicatd; labro crenulato. 



Conch. Icon., Mitra, pi. 19. f. 147. 



Hah. Island of Ticao, Philippines (found under stones at low 

 water) ; Cuming. 



The surface of this shell is characteristically grooved throughout. 



Mitra speciosa. Mitr. testd obeso-ovatd, utrinque attenuatd, trans- 

 versim impresso-striatd, longitudinaliter costellatd, costellis pla- 

 niusculis, basin versus granulosis ; rosaceo-albicante, costis fascid 

 latissimd fused aut purpurascente-fuscd tinctis, apice rosaceo ; 

 columelld quadriplicatd, plied superd vald^ maximd. 



Conch. Icon., Mitra, pi. 19. f. 148. 



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



