1861. J M. O. A. L. MORCh's REVIEW OF THE VERMETID^. 3o 1 



in anfr.primis, magna in anfr. ultimis ; lira columellaris acuta, 



-utrinque lirula minuia remotissima. 

 Diam. anfr. ult. ciic. 4 m. 

 Hah 1 S. Africa, Mus. Cuming {Carp.). 



Var. a. DiLATATA (Vermetus et Aletes). 



Differt a prcecedente anfr. planiusculis, sutura dilatata depressa, 

 rugis transversis validis approximatis. 



Hab. Mare Rubrum {Mus. 7-eg.) on Area foliacea, Forsk., with 

 NuUipores, like the preceding, which I suppose, with more proba- 

 bihty, is from this locality. 



I have seen specimens with and without internal laminae attached 

 on the same shell. One specimen shows on the outer wall a sharp 

 keel pointing to the slit between the laminae, which I have never 

 elsewhere seen so well developed. 



According to Carpenter, it differs from the following species in 

 the absence of the " remarkable" structure at the base, and in the 

 comparatively small size of the outer chamber : the former character 

 is probably quite accidental, and the latter is not constant in one 

 and the same species. The variety is still more like the V. cereits, 

 which perhaps will itself prove to be merely a variety when more 

 specimens have been compared. 



8. Vermetus cereus, Carpenter. 



Petaloconchus cereus. Carp. Proc. Zool. Soc. 1856, p. 316, f. 7, 

 no. 7. 



T. solitaria, spiraliter torta, quondam lateraliter affixa ; anfr. de- 

 pressi, obliqui, planiuscuH, contigui, aurantiaci, suturis depressis 

 alhis ; anfr. ultimus solutus, cylindricus, porrectus, albescens, 

 striis et rugis incrementi irregularibus ; lateris affixi verrucis 

 planis confertis in seriehus ohliquis digestis {an impressione 

 Gorallii ?) ; lamince parietales sat tenues, breviusculce ; camera 

 externa et interna subeequales ; lira columellaris acuta. Aletes 

 quoad magnitudinem. 

 Diam. aperturae 4| m., diam. anfr. penult. Q-7 m. 

 Hab. Ins. Philippin. {Cuming) ; Serpula, Born, p. 435, tab. 

 min., quoad formam. 



The surface of Carpenter's above-described specimen looks as if it 

 had been attacked by acid, and shows consequently no sculpture — 

 not even striae of growth. The small regular nodules on the white at- 

 tached side, regarded by Carpenter as a distinguishing character be- 

 tween this species and F. octosectus,are no doubt the cast ofa.nJstcea. 



Var. «. GYMNOGASTRA (VeRMETUs). 



T. solitaria, lateraliter qfixa, irregidariter spiralis, flava ; anfr. 

 contigui lati, suturis expansis depressis, liris parvis confertis 

 cequalibus ; rugcB incrementi leviter flexcR, suturam versus i^icras- 

 satcB ; umbilicus apertus angulatus ; laminae internee brevis- 

 simcB ; lira columellaris valida acuta. 



Diam. aperturae 4 m., anfr. ult. 5 m., anfr. penult, fere J-S m. 

 Aletes quoad magnitudinem. 



