AVPENniX. XIX 



1703. MUREX MONODON. 



M. test^ subfusiformi, tenui, anfractibus 6 sen 7, ro- 

 tundato-veiitricosis, transversim costato-striatis, 

 asperis, irrog'ulariter subquadrifariam variposis ; 

 yaricibus spinis loiigis, recurvis, dentatis armatis ; 

 suturil validA; apertura subrotunda, labio externo 

 infra medium dente valido instructo ; cauda lon- 

 giusciila, subrecurva. 



Martini Conch. Cabin, in. 1. 105, f.987, 980. 

 Obs. This shell, of whicli there are two speci- 

 mens in the collection, appears to have been reckoned 

 among tlie varieties of Murex ramosus ; we think, 

 however, that it is perfectly disting-uished by a strong 

 tooth plained below the centre of the outer lip, which 

 is evident in all ages of the shell ; a longitudinal tu- 

 berculatcd rib is observable between the varices of 

 the upper volutions. 



1/04. MUREX MONODON Var. 



M. testa crassiore, spinis varicum brevioribus, an- 

 fractibus omnibus intcrstitiis tuberculiferis, suturA 

 Iseviore. 



1789. STROMBUS CRENATUS. 



S. testa subovata, ventricosft, Isevi, spiri brevi, mu- 

 cronati'i, anfractibus prope suturas elcvatiusculis, 

 demum late depressis, parte inferiore et ventrico- 

 siore profunde transversim sulcata ; apertura ani- 

 pla, labio externo expanso, margine plicato, cre- 

 nato ; long. 7| wnc- lat. 5i unc. 



Obs. Three specimens of this fine shell, in vari- 

 ous stages of growth, adorn this collection ; they 

 are of a light chesnut colour, mottled with white, 

 and arc all covered with a strong slightly t'oliaccous 

 epidermis. The largest specimen does not appear 

 to be full grown, for it has not thickened its outer 

 lip, which is white Avithin. 



