1861.] M. O. A. L. MORCh's REVIEW OF THE VERMETID^. 179 



tentacula longa subulata, interrupte-lineata ; proboscis brevis ro- 



tundata. 

 Hab. Puntarenas {Oersted'). 



The diameter of the aperture is 10 to \0\ m. ; the thickness of 

 the shell 2 m. Fossil at Newburu, N. Carolina {Carp.). 



Var, ^. TIGRINA. 



T. solida, sordide flavescens, strigis transversis badiis confluentibus ; 

 anfr. obtuse qtiadr angular es, longitudinaliter expresse lirati, latere 

 externa liris latioribus, latere superiore albo, liris destituto ; lira 

 peripherica lata ; ruga incrementi prominentes, conferlce, unde 

 inter stitiis hie illic foveolatis ; apertura circularis,faucibusfuscis: 

 spira sic ut preecedentis. 

 Diam. ap. circ. 16 m. 

 Hab. West Columbia {H. Cuming). 



Four agglomerated specimens of different size, showing on the 

 flattened attached side remains of a gre}' sandstone. The colour, very 

 like that of Turritella tigrina, Kien., gives this variety a very strange 

 aspect ; but the nearly white var. h shows on a part of the whorl the 

 same colour, but feebler. 



Var. »;. CASTANEA. 



Versus aperturum strigis albis. 



Diam. ap. 7 m. 



A planorbiform specimen on a spine o( Murex melanoleucus, Morch. 

 The numerous minute striae which cover the liree as well as the 

 interstices, is nearly the only constant character. 



The operculum is well described by Carpenter (Cat. p. 304) from 

 specimens in Mr. Cuming's collection ; but I have only found one 

 specimen, labelled West Columbia, without shell ; perhaps another 

 may be found in the specimen figured by Reeve. I have not been 

 able, even under the microscope, to discover the punctated lines men- 

 tioned by Carpenter. 



Operculum concaviusculum, laminis 3-4, latis, confertis, laceris, ra- 

 diatim striatis, area centruU parva arete spirali laviuscula; inferne 

 planum, badium ; impressio muscularis lira elevala peripherica 

 terminata, con/ertissime concentrice lirulata ; limbus nitidus tri- 

 partitus : zona interna lineis tribus concentricis, zona mediana 

 latior convexiuscula, externa pallida tenuis Jiexilis. 



Diam. 9 m. ; diam. impress, muse. 2-| m. 



Hab. West Columbia (//. Cuming). 



Var. 1. from var. S. 



Hab. Puntarenas (Oersted). 



Diam. apert. 15-16 m. 



Operculum superne planum, laminis confertis {detritis}) brevissimis ; 

 impressio muscularis liris concentricis confertis subirregularibus, 

 lira elevata terminata, centro immerso ; liinbus nitidus, tripartitus; 

 zona interna angustior excavata, externa pallida angxista subreflexa. 



Diam. 12 m., impress, muse. 4\ m. 



Vermetus hindsii, Gray, Adams, Gen. t. 38. f. 8 a, 6 ? 



