811 



ovali, antice everta, effusa ; columella reflexa, aiitice dilatatti, pos- 

 tice uniplicata. 



A singular cylindrical species, with the upper part suddenly 

 acuminate, and with a wide, subquadrate aperture. 



Gindulman, isle of Bohol; soft mud, eight fathoms. (Mus. 

 Cuming.) 



23. Obeliscus attenuatus (pi. clxxi. f. 23), A. Adams. 



O. testa aciculato-turrita, subperforata, gracili, apice papilloso, 

 albida, nitida, transversim subtihssime striata ; anfractibus planis, 

 suturis profundis ; apertura ovali ; labio antice dilatato et reflexo, 

 postice valde uniplicato. 



A small, whitish, slender shell, transversely finely striated, and 

 with a single strong ])lait on the columella. 



Baclayon, isle of Bohol j under stones, low water. H. C. (Mus. 

 Cuming.) 



24. Obeliscus hastatus (pi. clxxi. f. 24), A. Adams. 



O. testa turrito-subulata, nitida, longitudinaliter substriata, 

 carneola, aut fulvescenti ; anfractibus planis, ad sutm'as concinne 

 crenulatis, suturis profundis, anfractu ultimo angulato, sulco 

 transverso instructo ; apertura ovali, antice augustata, acuminata; 

 columella rectiuscula, triplicata. 



A beautiful pale-yellow or flesh-coloured species, with the 

 wdiorls crenated near the sutures. 



St. Elena, West Columbia; sandy mud, six fathoms. H. C. 

 (Mus. Cuming.) 



25. Obeliscus clavulus (pi. clxxi. f. 33), A. Adams. 



0. testa turrito-cylindracea, subpupiformi, apice obtuso, longi- 

 tudinaliter substriata, pallide fulva, maculis rufis sparsim ornata ; 

 anfractibus planulatis, supra suturas sulco transverso munitis, 

 anfractu ultimo angustato, producto ; apertura elongate ovali, an- 

 tice acuminata; columella plicis tribus, obliquis instructa. 



A singular pupiform species, with the apex very obtuse, and 

 the aperture elongated. 



Acapulco; on the sands. Col. Mnffatt. (Mus. Cuming.) 



26. Obeliscus aclis (pi. clxxi. f. 30), A. Adams. 



0. testa acuculato-turrita, acuta, aurantiaca, glabra, nitida; 

 anfractibus planis, numerosis, suturis profundis; apertura ob- 

 liqua, oblongo-ovali, antice reflexa ; columella plica valida, in me- 

 dio, instructa ; labro intus lirato. 



5 N 



