812 



An orange-brown, subulate, polished shell, with the fore part 

 of the aperture everted, the columella with a single strong fold in 

 the middle, and the outer lip internally lirate. 



Loay, island of Bohol, Philippines ; hard clayey mud, sixty fa- 

 thoms. (Mus. Cuming.) 



27. Obeliscus annulatus (pi. clxxi. f. 26), A. Adams. 



O. testa turrito-subulata, albida ; anfractibus numerosis, planu- 

 latis, cingillis transversis, elevatis, subdistantibus ornatis, inter- 

 stitiis longitudinaliter striatis ; apertura oblonga ; columella pos- 

 tice lamina spirali instructa; labro margine subcrenulato, intus 

 lirato. 



A small species, with the whorls ringed with elevated, trans- 

 verse ridges, and with the intervals between them longitudinally 

 striated ; the fold on the columella is spiral and posterior. 



Cagayan, province of Misamis, Mindanao; twenty-five fa- 

 thoms, sandy mud. H. C. (Mus. Cuming.) 



28. Obeliscus striatulus (pi. clxxi. f. 29), A. Adams. 



O. testa turrito-subulata, albida, subpellucida ; anfractibus octo, 

 convexiusculis, transversim striatis, suturis impressis ; apertura 

 oblonga ; columella postice uniplicata ; labro acuto, intus lirato. 



A white, thin, semipellucid shell, with the whorls transversely 

 striated, the sutures deep, the columella with a single plait, and 

 the outer lip lirate internally. 



Feejee Islands. (Mus. Cuming.) 



Genus PYBAMLDELLA, Lamarck. 



Lingual membrane unarmed; tentacles ear-like, folded longi- 

 tudinally, with the eyes sessile at their inner bases. Mantle en- 

 closed, with a rudimentary siphonal fold. Foot small. 



Operculum horny, ovate, sinuated on the inner edge. 



Shell turreted, many-whorled, longitudinally ribbed ; spire ele- 

 vated, nucleus sinistral; aperture obovate, somewhat produced 

 and channelled in front ; columella curved, with three or four ob- 

 lique plaits ; outer lip simple, acute. 



Syn. Pyramidellus, Montfort. 



1. P yramidell a auris-cati (pi. clxxii. f. 1, 2), Chemnitz 

 (Voluta), Conch, t. 11. p. 20. pi. 117. f. 1711, 1712. Voluta 

 spiralis, Wood. Pyram. plicata, Lam. ed. Desh. vol. iv. p. 55 ; 

 Kien. Mon. Pyram. pi. i. f. 4. 



