348 M. O. A. L. MORCh's REVIEW OF THK VERMETID^. [Nov. 12, 



Var. ^. JUVENILIS, apertura personata. 



T. later aliter affixa spiralis ; anfr. circiter 10, contigui, castanei, 

 IcBviusculi, malleati vix lirati, varicibus impressis in linea 

 obliqua dorsali diyestis ; anfr. ultimus partitn solutus suberec- 

 tus ; peritrema injlexum, lobo dorsali triangulari, dentiformi, 

 obliquo, inde apertura cordiformi coarctatum. 

 Hab. India, on Tridachna squamosa. Lam. {Mus. Reg.). 

 This shell differs only from the young of V. conicus, Dillw., var. «, 

 in the posterior inflected lobe of the aperture, which is sharp and 

 not rounded. 



Forma 1. woodwardi, Carp. 



This form is analogous to forma electrina of V. variants, and to 

 forma indentata of V. contortus. 



Petaloconchus renisectus, var. woodwardi. Carp. Proc. Zool. Soc. 

 1856, p. 316. no. 5 e. 



T. dense agglomerata, nigro-castanea, cinerascens, substantia dura; 

 anfr. graciles, luxe contorti, in locis immersis annulatim rugosi, 

 sujjerne in locis apertis liris distinctis compressis, rugis incre- 

 inenti plerumque parvm prominenfibus ; ajtertura soluta, por- 

 recta, circularis ; anfr. intus nitide nigro-cantanei, laminis 

 duabus validis, marginibus refexis juxta columellam instructis, 

 lira mediana columellari plerumque valida. 



Diam. apt-rturse -^-1^ m. 



Operculum pallide flavum, superne concaviusculum, area centrali 

 parva concava, lamina suberecta circumdata ; inferne planum, 

 area centrali parva immersa, centro, ut mihi videtur, nodulo 

 irregulari. 



Diam. f m. 



A specimen was found loose on the upper side of the group. 



Hab. ■ ? A group with numerous specimens, about 9 dm, 



long and 6 broad, without locality, in Mr. Cuming's collection. 



Among the tubes were found a Bittium, closely allied to B. gib- 

 berulum, C. B. Adams, but brown, thicker, and- much shorter; two 

 specimens of Ccecuni (Anellwn), sp., and a Brockina (Folsella), about 

 51 m. long and 3 in height, very like Mgt. charpentieri, Dkr. Moll. 

 Guineens. t. ix. f. 12, and Modiola subsulcata. Reeve, f. 47, but 

 without bristles, and with a thick epidermis reflected inside ; also 

 a variety of the same with obliterated radiating lirse on the dorsal 

 side. This shell is very like to Vermetus varians, D'Orb., but the 

 tubes are of a smaller calibre, and the lirse are sharper. 



Var. J/. WOODWARDI (Thylacodus). 



Differt a prcecedente anfractibus amplioribus, nilididis, liris levi- 



oribiis ; color brunneus castaneus vel nigrescens. 

 Diam. aperturse circiter 2 m. 



Hab. ? A group about 1 1 dm. long and 6 broad, with a small 



Ostrea (sp. cardine utrinque denticulate), an example of Polytrema 



