148 Zoological Society. 



the columella in place of an umbilicus. The upper whorls are occa- 

 sionally faintly lined or spotted with brown. 



Melania pagoda. M. testa spinosd, turritd, costatd, transversim 

 striata, tenui, diaphand, corned, maculis badiis minutis linearibus ; 

 spird elongatd, subovatd, acuminatd, scalariformi ; suturd lineari; 

 anfractibus decern, superne angulatis et subconcavis, angulo spinu- 

 losis ; costulis obliquis longitudinalibus, inferne obsoletis, superne 

 in spinulas aut denticula eversa productis, in anfractibus superio- 

 ribus crebrissimis et magnis, inferioribus minoribus rarioribusque ; 

 striis transversis, parvis, crebris, alternantibus , maculatis, lineolis 

 longitudinalibus decussatis ; anfractu ultimo usque ad basim striato ; 

 aperturd ovatd, superne acutd, inferne effusd. 

 Hob. Isle of Guimaras, Philippines. 

 Length 1*4, diam. *6 of an inch. 



Remarks. — A beautiful little species, with irregular spines, very 

 strongly marked on the upper whorls, but which sometimes diminish 

 to denticulations on the lower. It can be mistaken for none of its 

 congeners, except perhaps the M. cochlea. 



July 23.— W. Yarrell, Esq., V.P., in the Chair. 



A Monograph of Cyllene, a genus of gasteropodous 

 Mollusca. By Arthur Adams, R.N., F.L.S. etc. 



Cyllene, Gray. 



Animal unknown. Operculum thin, horny, unguiform, with ter- 

 minal nucleus and imbricate elements. Shell ovate, volutiform ; spire 

 short ; suture channeled ; aperture oval ; columella anteriorly with 

 oblique grooves ; outer lip thickened externally, notched in front, 

 grooved within, and subreflected at the margin. 



1. Cyllene lyrata, Lamarck. 



Buccinum lyratum, Lamk. Hist. An. s. Vert. torn. vii. p. 272 ; Kie- 

 ner, Mon. Bucc. pi. 22. fig. 88. 



2. Cyllene Grayi, Reeve. 



Cyllene Grayi, Reeve, Elements of Conch, pi. 3. fig. 12. 



3. Cyllene Owenii, Gray. 



Cyllene Owenii, Gray, MSS. Brit. Mus. 



4. Cyllene pulchella, Adams and Reeve. 



Cyllene pulchella, Adams and Reeve, Zool. of Voy. of H.M.S. 

 Samarang, tab. 10. fig. 11. 



5. Cyllene lugubris, Adams and Reeve. 



Cyllene lugubris, Adams and Reeve, Zool. Voy. Samarang, tab. 10. 

 fig. 10. 



6. Cyllene concinna, Soland. C. testa ovato-fusiformi; spird 

 productd, albd, maculis luteo-fuscis ornatd, longitudinaliter 



