172 M. O. A. L. MORCH's REVIEW OF THE VERMETIDJE. [April 9, 



3—4 approximatis ; latere externa piano, Iceviusculo, obsoletissime 

 lirulato, superne obtuse angulato, liris tribus approximatis, 

 latere interna convexo subtilissime lirulato : spira elongato- 

 canica, turritelloidea (^fyura in Gen. Sowerhyi nan absimili 

 sed minore),ferruginea, basi lata plana vel concaviuscula, carina 

 prominente marginata, superne carina compressa app?-oximata, 

 versus suturam lira sursutn evanescente ; anfr. j)rimi inferne 

 carinis duabus subcBqualibus. 



Diam. ap. fere 7 m. 



Buonanni, f. 20? (aggregata?). 



Operculum superne concaviusculum,flavescens, laminis concentricis 

 suprapositis margine laciniatis ; inferne canvexiusculum, badium; 

 impressia muscularis canferte concentrice sulcata, centra pro- 

 mimila convexo ; limbus bipartitus, parte externa flava Jlexili, 

 interna nitidu badia, juxta aream canali circulari plana. 



Diam. circ. &\ m. 



Coll. Cumingii, sine loco. 



Var. /3. CORNEA, Knorr, Vergn. t. 2. t. 13. f. 1 quoad colorem. 



T, solidissima, badio et castaneo variegata, laxe contorta, longitu- 

 dinaliter subtilissime lirulata ; anfr. graciles {jircesertim su- 

 perne) latere inferno plana, utrinque carina irregidariter sub- 

 nodulosa, interstitia lira gemina mediana ; latere externa in- 

 ferne lira acutiuscula carinam appraximante, superne angula 

 obtuso, liris 3-4 approximatis subcequalibus ; latere interno 

 pallida convexo, lirulis incequalibus ; striis et rugis incrementi 

 sigmoideis, aperturam versus antiquatis ; spira deficiente sed 

 verisimiliter ultra salitum 2io,rva ; apertura circularis inferne 

 incrassata. 



Diam. 7 m.; diam. septi (fracturse) circ. f m. ; long, testse 22^ m. 



Coll. Cumingii, sine loco. 



Differs from the preceding by its great solidity, and chiefly in the 

 outer side being of a very dark, nearly black-brown colour. 



Var. y. 



" Apertura biangulata.'* 



Vermetus bicarinatus, Desh. Anim. s. Vert. 1843, ix. p. 67. 



Var. I. AMPLIATA. 



Vermetus bicarinatus, Desh., Chenu, Lecons Elem. p. 182. f. 602. 



V. indicus, Rouss., Chenu, 111. t. 3. f. 2 6 (idem). 



T. tenuiuscula, dilute castanea, laxe contorta ; anfr. approximati, 

 subtilissime lirulati, superne graciles versus aperturam ampliati, 

 oblique quadrangulares subgibbosi, latere interno declivi plani- 

 uscula, liris geminis in medio, superne carina acuta pallida, 

 inferne carina obtusa subnodidosa terminato ; latere externa 

 superne obtusissime angulato; apertura transversa, ovata, latere 

 interno angusfafo ; spira turritelloidea et eiN. solarini simil- 



