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12. Puos rurritus, A. Adams. P. testd ovato-fusiformi, tenui, 
subpellucidd, spird turritd, acuminatd, albido-fuscatd ; anfrac- 
tibus rotundatis, costis longitudinalibus angustis numerosis, 
lineis elevatis, transversis, ad costas nodulosis, ornatis ; colu- 
melld plicd anticd subevanidd. 
Hab. Panama, coral sand, 6 to 10 fathoms; H.C. - 
13. Puos rextitis, A. Adams. P. testd elongate ovatd, albidd, 
spird acutd, costis rotundatis, crassis, infra suturam nodoso- 
angulatis, lineis transversis, planis, subconfertis, elevatis, inter- 
stitiis longitudinaliter subtilissimé striatis; columelld plicd 
anticd valida. 
Hab. Dumaguete, Philippines; H. C. 
In general form this species approximates P. Blainvillii, but the 
elaborate and distinct style of sculpture and white aperture at once 
distinguish it. 
14. Puos rurocinctus, A. Adams. P. testd ovato-fusiformi ; 
spird productd, angustd, albidd, fascid rufa ornatd ; anfracti- 
bus rotundatis, costis crassis, infra suturam rotundatis, lineis 
transversis, elevatis, nodulosis, confertis, ornatis ; columelld 
plicd anticd productd. 
Hab. Dumaguete; H. C. 
The nucleus of this species is large and papillary. 
15. PHos scatarrores, A. Adams. P. testd ovatd, acuminatd, 
turritd, albidd, fusco variegatd, obscure fusco bifasciatd ; an- 
fractibus rotundatis, costis longitudinalibus, distantibus, infra 
suturam rotundatis, lineis elevatis, transversis, ad suturas no- 
dulosis, interstitiis subtilissime longitudinaliter striatis ; colu- 
melld superné callosd, inferne plicd productd; labro intus 
lirato. 
Hab. 2 
A beautiful species, with regular, strong ribs, giving it the appear- 
ance of a Scalaria. 
16. Puos sprnicostatus, A. Adams. P. testd ovatd, spird acu- 
minatd, albidd, sparsim fusco nebulosd; anfractibus rotundatis, 
costatis, costis distinctis, subdistantibus, infra suturam angu- 
latis et spinosis, lineis transversis elevatis ornatis ; columelld 
rufo-fusco maculatd, plicd anticd productd ; labro intus rufes- 
centi lirato. 
Hab. Batangas, in insulis Philippinis. 
17. Puos nopicosratus, A. Adams. P. testd ovatd, turritd, 
acuminatd, albidd, rufo-fusco maculatd ; anfractibus rotundatis, 
costatis, costis distantibus, infra suturam angulatis et nodosis, 
lineis transversis, elevatis, ad costas nodulosis ornatis ; colu- 
melld plicis evanidis, plied anticd valida productd. 
Hab. ad insulam Negros; H. C. 
The two species, described above, are somewhat similar in form, 
