346 M. o. A. L. morch's review of the vermetid>e. [Nov. 12, 



Vermetus {Thylacodus) contortus, var. mdentata, Carp., Morcli, 

 Mai. Blatter, 1860, p. 77. no. 69. 



Hab. Sonsonate ; two specimens on a rolled valve of a young Spon- 

 dylus limbutus. Reeve (vix Sow.) (^Oersted). 



This variety corresponds exactly to V. varians, forma 1, var. e. It 

 diifers chiefly in the position of the laminae, which does not look to 

 be quite constant. V. macrophragma differs in having both laminae 

 distinctly situated on the columella itself, while their position in 

 the present species is not very evident. The median columellar lira 

 is not so strongly marked as in V. macrophragma. 



Var. e. corrodens (Vermetus). 



T. parva profunde corrodens ; columella lira acutinscula ; latninis 

 duabus acutis latiusculis in parietibus juxta columellam ?'«- 

 structa. 



Hab. Ins. Sibo* (Sjjglr.), on Purpura lineata. Lam. 



The outside of the specimens is entirely destroyed. I refer this 

 shell to the present species on account of the locality and the situa- 

 tion of the internal laminse. 



5. Vermetus renisectus (Carp.), Morch. 



Petaloconchus renisectus, var. Carp. Proc. Zool. Soc. 1856, p. 315. 



T. badia, lateraliter affixa, spiraliter torta ; anfr. obliquis sub- 

 cequalibus, fere ubique contiguis, longittidinaliter leviter liratis, 

 interstitiis Iceviusculis, prcesertim versus aperturam, et in latere 

 umbiUcali lirida intercalante ; rugce incrementi regulares, rectce, 

 cequidistantes, scepe in intersectionibus graniferce ; intus laminis 

 duabus planis juxta columellam instruct a ; lira columellari me- 

 diana distincta ; apertura circidaris soluta. 



Diam. aperturse 2 m. 



Vermetus glomeratus, Rouss. Chenu, 111. pi. 2. i. 2 d (quoad for- 

 mam). 



Var. a. (Vermetus). 



Lirce obsoletcB ; rugcB incrementi acutiusculce, prominentes. 



Hab. Ins. Phihppin., both varieties on a valve of Radula vulgaris, 

 Link (coll. Cuming). 



The shell shows on some places an amber-like pellucidity, like F. 

 varians, forma 1. 



Var. /3. gordialis (Thylacodus). 



T.fiavescens,fusco-cinerea, agglomerata, lateraliter affixa, spirali- 

 ter torta, anfr. obliquis plerumque contiguis, liris parvis regu- 

 laribus, interstitiis obsolete inmctato-scrobiculatis, rugis incre- 

 menti regularibus, approximatis ; sutura pallida appressa ; 

 columella lira mediana acuta, utrinque liris duabus obsoletis 

 remotis ; apertura circidaris soluta. 



Diam. 3 m. 



* Very likely intended to be Quibo. 



