356 HAMINEA. 



Bulla elecjans GRAY, Annals of Philos. N. Ser. ix, p. 408, 1825 ; 

 Index Testae. Suppl., pi. 3, Bulla f. 2 (Good !) ; and Haminea ele- 

 gans LEACH, Syn. Moll. G. B., p. 42, at least in part. Not H. ele- 

 gans of authors ! Bulled guildingii SWAINS, Malacol. p. 360, and 

 251, f. 4Q.B. (Haminea) guildingii AD. in Thes. p. 580, pi. 124, 

 87-89. H. guildingii SOWB., Conch. Icon., f. 5. MORCH., Mai. Bl. 

 xxii, p. 174. DALL, Blake Gastr., p. 57, and Cat, Mar. Moll. S. E. 

 U. S., p. 88. ? Bulla diaphana Couth, in GOULD, Proc. Bost. Soc. 

 N. H., iii, p. 91, 1849; Expl. Exped., p. 222, f. 265 (animal and 

 shell). 



This is one of the most distinct species. The engraved spirals 

 are clearly visible without a lens, and are uncommonly clear cut 

 and straight. The open apical perforation and the mode of inser- 

 tion of the upper end of the lip are also good diagnostic features. 



The description of Bulla elegans given by Gray applies undoubt- 

 edly to this form, not to any European species ; and Leach's H. 

 elegans is also the same, although he may have confused other shells 

 with it. Leach always meant " spiral " by his term " longitudinal 

 strise." By no possible means can Gray's or Leach's descriptions 

 be made to fit the H. hydatis of Europe. The spirals of that form 

 would never have been seen by them, and it never attains the length 

 of three-fourths of an inch. 



The B. diaphana of Gould from Rio Janeiro, which I think is 

 very likely synonymous, is illustrated on pi. 48, fig. 8. 



H. GLABRA A. Adams. PL 43, fig. 18. 



Shell fragile, pellucid, translucent, ovate, roundly truncate above, 

 rounded below, color pale greenish-corneous. Surface polished and 

 shining, showing under a strong lens some unequally spaced spiral 

 incised strise, fewer or obsolete in the middle. Vertex concave, 

 with a minute central perforation. Outer lip arising on the left side 

 of the perforation, which is surrounded by the continued parietal 

 callus, at the termination of which there is a salient angle of the 

 rising lip. Columella very concave, with narrowly reflexed edge, 

 hardly folded above. Alt. 9, diam. 6 mill. 



St. Thomas (Swift). 



Bulla (Haminea) glabra A. AD., Thes. p. 581, t. 124, f. 96. 

 Haminea glabra SOWB., Conch. Icon., f. 27. SMITH, Ann. Mag. 

 (4), ix, p. 349. 



