208 HELICINA §. 18. 



155. H. dentlculata Pfr. 



T. globoso-conica , solidula, oblique striata, minutissime 

 decussata, rugis antrorsum descendentibus distantioribus sculpta, 

 parum nitida, alba, superne late flavo-fasciata ; spira convexo- 

 conica, acuta; sutura eleganter denticulata; anir. 5*/^ vix con- 

 vexiusculi, ultimus peripheria subangulatus, basi parum con- 

 vexus; columella breviter arcuata, antrorsum dentata, superne 

 rima brevi notata, retrorsum in callum tenuem abiens; aper- 

 tura subtriangulari-semiovalis ; perist. album, angulatim patens, 

 medio in rostrum triangulare productum. — Operc? — Diam. 

 maj. c. rostro 13, min. fere 11, alt. 9 mill. (Mus. Cuming.) 

 Uelicina denticulata Pfr. in Proc. Zool. Soc. 1855. p. 103. 



— — Pfr. Novit. conch. I. p. 84. n. 144. t. 23. f. 9. 10. 



Habitat Honduras. 



156. gonoehlia IPfr. (CoU. 113. — Gray Phan. p. 



283. — Pachystoma Ad. Gen. p. 303.) .... Mon. p. 389. 



157. H. §;ratio8a Pfr. 



T. subgloboso-turbinata, tenuiuscula, striatula, striolis spi- 

 ralibus obsoletissime notata, nitida, pellucida, fuscescenti-rubra 

 vel lutea; spira conoidea, acutiuscula; anfr. 5 convexiusculi, 

 ultimus subcarinatus, antice rotundatus; columella subrecedens, 

 alba, callum emittens albidum; apertura obliqua, subtriangu- 

 lari-semicircularis ; perist. undique breviter expansum. — Operc. 

 tenue, solidulum, carneum. — Diam. maj. 9, min. 7'/2, alt. 

 fere 6 mill. (Mus. Cuming.) 



Helicina gratiosa Pfr. in Proc. Zool. Soc. 1856. p. 385. Malak. Bl. 

 1856. p. 245. 



Habitat „Admiralty Islands." 



* 



158. seopuioruni Iflor- (Coll. lll. — Ch. ed. nov. 

 p. 72. t. 10. f. 21-23. — Pfr. in Mal. Bl. 1856. 

 p. 148. — //. marmorea Vel. — H. elongata Pfr. 

 Mon. n. 114. Nec Orb. — Gray Phan. p. 283.) . Mon. p. 389. 



159. H. pyraniidaiis Soweri^y. 



T. trochiformis, tenuis, sublaevigata, lutea; spira subcon- 

 cavo-conoidea, mucronata; anfr. 7 '/2 planiusculi, medii tenui- 

 ter spiraliter striati, uUimus subcarinatus ; coknnella verticahs, 

 complanata, callum tenuissimum retrorsum emittens; apertura 

 diagonalis, subquadrangulari-ovalis ; perist. tenue, breviter ex- 

 pansum, margine dextro leviter sinuato, basali versus colu- 



