Bulletin 29 232 



Localities. — (Exp'd '16) Zones H and I, Rio Cana at 

 Caimito. 



Oliva brevispira Gabb 



Plate 10, Figures 16, 17 



Oliva brevispira Gabb, Trans. Anier. Phil. Soc, vol. 15, p. 215, 1873. 

 Oliva Giraudi Cossmann, Journ. de Conchyliologie, vol. 61, p. 56, pi. 

 5, figs. 4-8, 1 91 3. Exclude synonymy. 



We have a large series agreeing with our metatype of Gabb's 

 O. brevispira and with Cossmann' s figures of O. Giraudi from 

 Martinique. The latter only appears a trifle broader shouldered 

 than the Dominican shells. 



O. brevispira has a characteristic short spire; round, glassy, 

 button-like protoconch; and inner lip with fifteen to sixteen 

 plications. 



Localities. — (Exp'd ' 16) Bluffs 2 and 3, Cercado de Mao 

 (very abundant); Zone G, Rio Gurabo at Los Quemados; Zones 

 H and I, Rio Cana at Caimito (abundant). 



Genus Olive ll a Swainson 



Olivella muticoides Gabb 



Plate 11, Figure 1 



Oliva muticoides Gabb, Trans. Amer. Phil. Soc, vol. 315, p. 215, 1873. 

 Olivella viutica variety muticoides Dall, Trans. Wagner Inst. Sci., vol. 

 3, pt. 1, p. 45, 1890. 



This species is closely akin to the Miocene — Recent O. mu- 

 tica Say, which is living on the Monte Cristi beach. It is also 

 near to O. Boussaci Cossmann, from Martinique. Gabb's spe- 

 cies has never been figured, but we have metatypes for compari- 

 son. The shell has not been found outside of Santo Domingo. 



Localities. — (Exp'd '16) Zone G, Rio Gurabo at Los Que- 

 mados; Zone H, Rio Cana at Caimito. 



Olivella muticoides variety canaliculata Gabb 

 Plate 11, Figure 2 

 Oliva canaliculata Gabb, Trans. Amer. Phil. Soc, vol. 15, p. 215, 1873. 



