356 HAMINEA. 



Bulla elegans Gray, Annals of Philos. N. Ser. ix, p. 408, 1825 ;. 

 Index Testae. Siippl., 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 ! — Bullce guildingii Swains, Malacol. p. 360, and 

 251, f. 46. — B. {Haminea^ guildingii Av). in Thes. p. 580, pi. 124, f. 

 87-89. — H. guildingii Sowb., Conch. Icon., f 5. — Morch., Mai. Bl. 

 xxii, 13. 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 descrij^tions 

 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. PI. 43, fig. 18. 



^heW 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 striae, fewer or obsolete in the middle. Vertex concave, 

 with a minute central perforation. Outer lip arising on the leftside 

 of the perforation, which is surrounded by the continued parietal 

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

 rising Up. Columella verxj 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. 



