90 phos. 



4. scalaroides (f. 13), A. Ad. Pro. Zool. &><;. 1859.— P. 

 testa solida, turrita, spiraliter duplicatim striata, albida, ad angu- 

 lum et medio aufractuum fusco cincta; costis longitudinalibus, 

 crassis, rotundis, regularibus, superne subangulatis ; canali extiis 

 rotundato, crenulato. — Named as above from the roundness and 

 regularity of the ribs. Ilab. ? 



5. plicatus (f. 23), A. Ad. Pro. Zool. Soc. 1859.— P. testa 

 solida, turrita, pallida, rufo sparsim maculata, liris scabrosis, ad 

 costas nodulosis, spiraliter cincta; spira breviuscula ; anfractibus 

 subangulatis, costis rudis, crebris, versus aperturam creberrimis 

 ornatis. — The ribs are scabrous, and more close-set than in P. 

 muriculatus. Eastern seas, Mr. Cuming's collection. 



6. eoseatus (f. 1, 2, 3), Hinds, Toy. Sulph. Moll. pi. 10./'. 

 5, 6, p. 38. — P. " testa ovata, acuminata, turrita, cancellata, in- 

 terdum varicosa ; anfractibus rotundatis, sparsim fusco-ucbulosis ; 

 labio pone costas aggregates, sinu magno ; apertura subquadrata, 

 rosea, superne callosa sed edenticulatu." — Shaped like P. senti- 

 cosa, but thinner, with narrow, prettily articulated ribs, which 

 are crowded into a broad varix behind the mouth. Philippines, 

 Cuming, and Moluccas. 



7. keticosus (f. 36), Hinds, Voy. Sulph. Moll. p. 37. vol. 10. 

 /. 3, 4. — " P. testa elongate ovata, ventricosa, subturrita, pallida ; 

 anfractibus rotundatis, concinne costatis ; costis numerosis, lineis 

 transversis nodulosis, pone labrum valdii aggregatis, labio sub- 

 crenulato; columella varicosa, vix callosa." — The longitudinal 

 ribs are crossed by raised, brown, nodulous lines, and a large 

 broad varix is formed by the crowding of ribs behind the mouth. 

 Ceylou. 



8. citASSUS (f. 5), Hinds, Voy. Sulph. Moll. p. 31.pl. 10./. 

 1,2. — P. testa elongata, ovata, subturrita, solida, pallide fusca; an- 

 fractibus rotundatis, costatis; costis rudibus subdistantibus, lineis 

 salientibus decussatis ; labio grandi-dentato ; columella antice 

 valde producta. — A large, thick species, with broad banded ribs. 

 Panama. 



9. virgatos (f. 35), Hinds, Voy. Sulph. Moll. p. 37 . pi. 10./. 

 11, 12. — "P. testa elongate ovata, laevigata, pallide fusca; an- 

 fractibus rotundatis, costatis, infra suturam subcoarctatis, costis 

 rotundatis, superne nodatis, lineis impressis fuscis transversim in- 

 structis ; labio subcrenulato ; columella laevi, producta." — The 

 ribs are crossed by impressed brown lines. Ceylon. 



10. l/evigatus (f. 0), A. Ad. Pro. Zool. Soc. 1850.— P. testa 



