2o Bulletin 29 184 



to the margin of the outer lip. These bands narrow and con- 

 verge towards the spire and increase to a width of about 2 mm. 

 at the middle of the shell. Due to an interesting optical qual- 

 ity, these bands when viewed in reversed lights are interchanged, 

 the light and dark zones changing place, like certain signs ar- 

 ranged on a series of slats which read differently from diverse 

 points of view. Length of shell 45, greatest width 32 mm. 



We found, as it were a nest, of about fifteen of these beau- 

 tiful great Bullarias in a single spot up the Cana and nowhere 

 else. In size and general form this species resembles specimens 

 in the Newcomb collection of the large B. ampulla Linne from 

 the East Indies. 



This magnificent species of the genus Bullaria is affection- 

 ately and gratefully dedicated as a tribute to the memory of 

 Mrs. Sarah Berliner. 



Locality. — (Exp'd '16) Zone I, Rio Cana, near Caimito. 



Bullaria granosa Sowerby 

 Plate 3, Figure 10 



Bulla granosa Sowerby, Quart. Jour. Geol. Soc. London, vol. 6, p. 51, 



pi. 10, fig. 10, 1S49. 

 Bulla granosa Gabb, Trans. Amer. Phil. Soc, vol. 15, p. 246, T873. 

 Bulla granosa Guppy, Gcol. Mag. London, p. 437, 1874; Quart. Jour., 



vol. 32, p. 518, 1876. 



Shell ovate-globular, thin, spire inrolled, body whorl ven- 

 tricose, handsomely sculptured with fine impressed spiral lines 

 crossed by longitudinal arcuate growth-lines; inner lip with a 

 rather wide band of callus, thickest anteriorly, where it is defined 

 by a narrow groove. Length of shell 22, greatest width 17 mm. 



This fine shell does not appear to have been found except in 

 Santo Domingo. 



Sowerby quotes its resemblance to Btdla hydatis in form, 

 but that species is very much more globose. 



Locality. — (Exp'd '16) Zone I, Rio Cana. 



