APPENDIX. XIX 



1703. MUREX MONODON. 



M. testa subfusiformJ, tenui, anfractibiis 6 seu 7, ro- 

 tundato-ventricosis, trans versim costato-striatis^ 

 asperis, irreg^ulariter subquadrifariam varicosis ; 

 varicibus spinis longis^ recurvis, dentatis armatis ; 

 sutura valid^j apertur^ subrotunda, labio externo 

 infra medium dente valido instructo ; cauda lon- 

 giuscula, subrecurv^. 



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

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

 mens in the collection, appears to have been reckoned 

 among the varieties of Murex ramosus ; we think^ 

 however, that it is perfectly distinguished by a strong 

 tooth placed below the centre of the outer lip, which 

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

 berculated rib is observable between the varices of 

 the upper volutions. 



1704. MUREX MONODON Var. 



M. tests, crassiore, spinis varicum brevioribus, an- 

 fractibus omnibus interstitiis tuberculiferis, sutur^ 

 laeviore. 



1789. stro:mbus crenatus. 



S. testa subovata, ventricosa, Isevi, spira brevi, mu- 

 cronata, anfractibus prope suturas elevatiusculis, 

 demum late depressis, parte inferiore et ventrico- 

 siore profunde transversim sulcata; apertur^ am- 

 pld, labio externo expanso, margine plicato, cre- 

 nato ; long. 7i unc. lat. 5i unc. 



Obs. Three specimens of this j&ne shell, in vari- 

 ous stages of growth, adorn this collection; they 

 are of a light chesnut colovu', mottled with white, 

 and are all covered with a strong slightly foliaceous 

 epidermis. The largest specimen does not appear 

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

 lip, Avhich is white within. 



