BOTHRIEMBRYON. 5 



while in several varieties grouped under B. melo there should be 

 quite a wide granose belt below the suture. This varies by imper- 

 ceptible degrees. 



Figures 1, 2, are copies of Deleosert's figures of Lamarck's type. 

 My artist has exaggerated the vertical streaks a good deal. Figures 

 3, 4, represent what I take to be the typical form of the species, 

 being drawn from specimens from King George Sound. Figure 5 

 represents the largest specimen I have seen, drawn from a shell in 

 Dr. J. C. Cox's collection. 



The citation of Helix costulata Fer. as a synonym rests solely upon 

 Lamarck's authority. I have doubts of the shell figured as inflatus 

 by Reeve. 

 Var. melo (Quoy & Gaimard). PL 1, figs. 7, 8, 9, 10. 



Similar to B. inflatus * but with numerous irregularly spaced red- 

 dish-brown streaks running with the growth-lines, and usually with 

 some whitish longitudinal threads in their intervals ; often having a 

 dark subsutural band and umbilical patch. Aperture light (not 

 white) and streaked within, columella purple-brown or tinted. 



The merest color-variety, admitted here chiefly because the name 

 is in ordinary use. Quoy and Gaimard distinguish a variety of melo, 

 described below, which differs in the darker color and white cinc- 

 ture. 



Figures 9, 10, are the typical melo of Q. & G. Figures 7, 8, are 

 specimens from King George Sound. 



Var. castaneus Desh. (pi. 1, figs. 11, 18). Less inflated than B. 

 inflatus ; length about 2225 mill.; purplish-chestnut, with a light 

 belt above, and more or less numerous whitish stria ; granulation below 

 the suture of the last whorl weak or almost obsolete. King George 

 Sound. This form is but weakly differentiated from the streaked 

 variety melo of B. inflatus. 



Alt. 23, diam. 12.5, longest axis of aperture 12.5 mill. 



Alt. 22, diam. 13, longest axis of aperture 12.5 mill. 



King George Sound (Q. & G.) and Recherche Archipelago (Dr. 

 Cox). 



This is Quoy and Gaimard's " varietas castanea, vitta alba cincta" 

 figures 6, 7 of the Astrolabe Zoology (my figure 11). 



Var. maculiferus, n. v. (pi. 1, figs. 12, 13, 14). Larger, alt. 28-32 

 mill.; purplish-chestnut copiously streaked and maculated with 

 whitish; no light belt; the aperture dark; more or less granose 



