1861.] M. O. A. L. MORCh's REVIEW OF THE VERMETID^. 355 



interrupta, latere basali plerumque occulta, mterdum lirula 

 parva ; riigce incrementi prominentes approximatre continue ; 

 anfr. ultimus Candidas IcBvigatus, strata interno {casu ?) denu- 

 datus ; columella superne lamina spirali validissima, maryine 

 deflexo acuto parietem interdum approximante ; inferne carina 

 recfangulata acuta in anfr. ultimis evanescente ; lira mediana 

 obsoletissima ; apertura irreguluriter pentagona, columella su- 

 perne carina valida acuta (i. e. lamince superioris termiuatione) 

 inferne liris duahus remotis. 

 Diam. aperturae circ. 4 ni. 

 Hab. Guinea? 



In the Roj^al Museum there is a dissected specimen, with the first 

 whorls broken, very like Hornes's figure, but somewhat larger, about 

 29 m. long., and 1 1 broad, with about sixteen whorls. It looks like 

 a fossil ; but the keels are feebly coloured, and the inside is glossy ; 

 on the third whorl from the aperture is a varix. The sculpture and 

 form are quite those of the preceding ; the chief difference is the 

 enormous development of the superior lamina, which, in the first 

 whorls (the seventh and sixth from the aperture), are rather thin, 

 very thick in the middle whorls, and thinner again in the last whorls. 



15. Vermetus (Thylacodus) subcancellatus, Bivon. 



T. solitaria, rarius gregaria, teres, arete spirata, fere tota affixa, 

 repens, fusca, striis transversis longitudinalibus subcancellata, 

 extremitafe antica aliquando libera, porrecta. 

 T. subspiralis, gyris frequentibus, fere tota adnata, repens, aut 

 saltern antice breviter tantum porrecta, lineis elevatis trans- 

 versis et longitudinalibus cancellata, fusca, rufa, aut lutescens. 

 Diam. I'". 



Animal atropurpureum, tentaculis cylindricis, retractilibus, su- 

 perioribus longiusculis, inferiora fere cequantibus. Ojjerculum 

 completum, tenue, planum. 

 Tubidus, Buonanni, Recr. p. 93. ii. t. 2. f. 20 g. 

 Le Gateau des Vermisseaux, Fav. i. p. 654 (uon t. 10. f. 3). 

 Tubuli vermiculares, Petiver, Gazoph. i. t. 151. f. 11 (copy). 

 Serpula glomerata, Linn. S. N. xii. p. 1266. no. 80 (non edit. 10, 

 nee Faun. Suec. nee Mus. Ludov. Ulr.). 



Vermetus glomeratus, Haid. Ips. Linn. Conch. 

 Vermetus subcancellatus, Bivona, /. c. p. 12 (ex Phil.) ; Phil. 

 Enum. i. p. 172. no. 5, t. 10. f. 20 ; ii. p. 144 ; Poli & Delle Chiaje, 

 t. 57. f. 18. 



Vermetus subcancellatus, Mrs. Gray, Figs. i. t. 58. f. 3. 

 Bivonia subcancellata, Adams, Gen. i. p. 358 ; Gray, Guide, 

 p. 127. 



Hab. Frequentissima in toto littore Sicilise (Philippi). Mediter- 

 anean (coll. Cuming, Bunker, et Mus. Min. Hafn. sp. orig. Phi- 

 lippii). _ ... 



1 have examined five or six groups without findmg any internal 

 laminae, as Sowerby and Moore appear to have done. In a com- 



