300 M. O. A. L. MORCIl's REVIEW OF THE VERMETTD^. [NoV. 12, 



21. VeRMETUS (MACROPHRAGMA)MACROPHRAGMA,Carp. 1857. 



T. parva badia lateraliter affixa, scBpe erodens, spiraliter torta ; 

 anfr. primi planiusculi contigui, ultitni teretes laxe contorti, liris 

 longitudinalibus satis expressis et approximatis, rugce incrementi 

 expresses approximate ; anfr . mediani laminati, lamina superior 

 latissima, primum simplex, dein angido recto deflexo, extus ca- 

 rinis 1-3, harum 2 acutissimis ; lamina inferior simplex, lirula 

 mediana acuta, ad laminam inferior em approximans. 

 Diam. aperturse "07 ; spirse "23 poll. {Carp.). 

 Petaloconchus macrophragmu. Carp. Cat. p. 309. no. 359 ; Proc. 

 Zool. Soc. 1856, p. 313. fig. 1 ; 1856, p. 226 ; Morch, Mai. Blatter, 

 1860, p. 670. 



Hah. Mazatlau, not uncommon on UvaniUa, Cuma, Murex prin- 

 ceps, &c. Panama, on Margaritifera, Mus. Cuming {Carp.) ; on 

 Vermiculus eburneus. Reeve {Coll. Cuming). Realejo, ou stones. 

 Oersted {Mus. Reg.). S. Diego, Euraphia hemhelii adhserens, Carp. 

 Proc. Zool. Soc. 1856, p. 226 {Mus. Nuttal.). 



The V. contortus, Carp., is perhaps the adult stage of this species, 

 which again possibly may be a form of Aletes centiquadrus, according 

 to the analogy with the forms of Fermetus conicus. Dill., described 

 above. 



Sect, a, lamina columellaris infima intus laminam minorem gerens. 



22. Vermetus (Macrophragma) cochlidium, Carp. 



T.conferteagglomerata,suhcijlindrica,irregulariter spiraliter torta, 

 badia ; anfr. plerumque contigui convexiusculi, liris longitudi- 

 nalibus validis regidaribus, rugis incrementi angustis regularibus, 

 inter sectionibus scepe nodiferis, interstitiis lirarum plerumque 

 quadratim foveatis ; anfr. tdtimus jit^rtim solutus, porrectus, 

 tortus, intus laminis duabus ab axi procedentibus, tenuissimis, 

 superiore majore, hue illuc latissima, acie acuto, vel in unguium 

 obtusum curvata, carinis duabus validis labrum versus instructa ; 

 inferiore minore plana, intus lamina parva obliqua instructa. 

 Diam. spirse '2 ; aperturee "08 poll. {Carp.). 

 Hab. Australia {Mus. Cuming). 



It appears that Mr. Carpenter regards the "third" smaller lamina 

 " growing out of the lower flat lamma as homologous with the co- 

 lumellar median lira," which I do not believe is correct. I have not 

 been able with certainty to ascertain the presence of the latter. 



Var. ft. (Thylacodus). 



T. spiraliter torta, anfr. ultimo recto, longissimo, partim adnata, 

 plerumque pallida, albescente, intus nudo ; anfr. mediani coin- 

 mellce lira submediana acuta, compressa, valida, perobliqua, su- 

 perne et inferne lirula obsoletissima, callo obsoletissimo lineari 

 {lacteo ?) utrinque in parietibus versus columellam instructo. 



Petaloconchus, sp.. Carpenter, Proc. Zool. Soc. 1856, p. 31 7. n. 9. 



Hab. Tahiti {Mus. Cuming). 



A small group, mostly composed of long, transversely Avrinkled 



