445 



19. Cancellaria mitriformis (pi, xciii. f. 24, var. f, 35,), 

 Sowerhy, Pro. Zool. Soc. 1832. p, 51. C. uniplicata, Sowerby, 

 P.Z.S. 1832. p. 173. 



C. testa oblonga, costis longitudinalibus et transversis numerosis, 

 subnoduliferis cancellata ; spira acuminata ; anfractibus angulatis ; 

 apertura Isevi ; labio externo deutato, emargiuato ; columella antice 

 producta, crenulata, irreg-ulariter bi-plicata ; colore brunneo ; 

 variat nigricante, 



From Panama. In the variety named C. tmiplicata, by Mr, 

 Sowerby, senior, there is an indication of a second fold, wliich in 

 an intermediate specimen becomes more decided : the gradation 

 in other respects leaves no doubt on the mind of the describer of 

 C. uniplicata, that, however different the dark-colom-ed specimens 

 may appear, they are but incompletely formed varieties of C. mitri- 

 formis, which is one of the most beautiful, as well as rare, of the 

 Cancellarice in Mr, Cuming's collection, 



20. Cancellaria clavatula (pi, xcii, f, 13; pi, xcv, 

 f, 67.), Sowerby, Pro. Zool. Soc. 1832. p. 52. 



C. testa elongata, clavata; costis longitudinalibus transverse 

 striatis ; varicibus raris elevatis : spira acuminata anfractibus 

 angulatis : apertura interne Isevi, prope marginem dentata ; labio 

 externo emargiuato, columella bi-plicata. Colore fulvo vel fusco 

 bilineato. Variat striis ad costas acute elevatis. 



Prom Panama and Payta, where it was taken up from sandy 

 mud in seven fathoms water. Like the last species it is slender 

 in form. It has elevated varices at different periods of growth, 

 Hke those in the genus Triton. The mouth is laterally prominent. 

 Fig. 67 represents a variety with the crossing striae elevated into 

 points at the angle of the whorls. 



21. Cancellaria t^niata (pi, xcv, f, 75, 76.), Sotoerhi, 

 Pro. Zool, Soc. 1848. 



C. testa oblonga, turrita; costis numerosis, transverse striatis 

 ad angulum anfractuum acute angulatis; spira acuminata, apice 

 mammellifera; apertura interne laevigata, margine acuto, columella 

 Isevi, biphcata. Colore pallidissime fulvo, fusco ta?niato. 



Shell oblong, turretted, with numerous transversely striated ribs, 

 Avhich are elevated into acute points at the angle of the whorls. 

 The colour is disposed in transverse narrow bands on a very pale 

 £Cround. Locahtv unknown. 



