MELON GEN A. 



109 



the shell which Lamarck called Pyrula angulata, and which 

 Kiener flgures (fig. 204). The vciy numerous suite of specimens 

 before me conclusively shows that all the various forms which I 

 have figured are conspecific. 



M. BUCEPiiALA, Lam. PI. 42, fig. 209. 



Light yellowish brown, covered usually with a thin, rather 

 smooth, horn-colored epidermis. Length, 3-4*5 inches. 



Indian Ocean. 



Reeve's habitat " Mexico " is certainly an error. 



M. PALLIDA, Brod. and Sowb., PI. 42, figs. 210-215. 

 Yellowish white. Length, l-25-l-t5 inches. 



Mazatlan, W. Coast of Geyitral America. ? 



With this species I unite the following as synonyms : 



31. anomala, Reeve (figs. 212, 213), which is the adult state of 

 growth — the variability of the species is shown by fig. 213, which 

 Reeve considers a variety of his anomala, M. lignaria, Reeve 

 (fig. 214), a form which is not adult, and Fusus Turbinelloides, 

 Reeve (fig. 215), is older, still not quite adult. 



H. and A. Adams erroneously refer M. anomala, Reeve, to 

 Neptunea, in which the name is preoccupied; they therefore 

 changed it to Neptunea ancejjs. 



The species might as well be referred to Siphonalia as here. 



M. FUSiFORMis, Blainv. PI. 42. figs. 216-218. 



White, more or less stained with rusty brown, under a fibrous 

 brown epidermis. Length, 2-2-5 inches. 



St. Elena, W. Columbia, in crevices of rocks at low 



water. — Cuming. Pe/'«.— d'Orbigny. 



This shell is apparently very closely related to Guma Kios- 

 qaiformis (Vol. II, p. 200), but the operculum, according to 

 d'Orbigny, is not purpuroid. The resemblance, conchologically, 

 is much nearer Guma than either Melongena or Siphonalia, and 

 I cannot help thinking that the great French naturalist was mis- 

 taken as to the operculum. 



M. MYRisTicA, Reeve. PI. 42, fig. 219. 



Yellowish red, white within the aperture. Length, 28 mill. 



Ilab. unknotcn. 



