54 Bulletin 29 318 



Society. This large Drillia named for him by Sowerby has also 

 been found at Bowden. 



Localities. — (Exp'd '16) Bluffs 1 and 3, Cercado de Mao. 



Drillia squamosa Gabb 

 Plate 9, Figure 1 



Turris {Drillia') squamosa Gabb, Trans. Amer. Phil. Soc, vol. 15, 



pp. 208, 209, 1873. 

 Pleurotoma squamosa Guppy, Quart. Jour. Geol. Soc. London, vol. 



32, p. 527. pi. 29. fig. 7, 1876. 



This striking Drillia is easily recognized by its bold, oblique, 

 sharp-edged ribs, and its squamose surface. We have meta- 

 types and some fine specimens of our own. The shell has not 

 been found outside of Santo Domingo. 



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

 mados. 



Drillia riogurabonis, n. sp. 

 Plate 9, Figure 2 



Shell with three smooth nuclear and five post- nuclear whorls, 

 ornamented with rather sharp longitudinal ribs of which there 

 are ten on the body whorl, the last rib being thickened, forming 

 a small varix; the ribs extend from suture to suture; spiral 

 sculpture of faint striae almost obsolete except on the anterior 

 part of the shell; margin of outer lip thin, the external varix ly- 

 ing a short distance back of the lip; posterior sinus deep, nar- 

 row, adjoining the suture; anterior canal bent slightly forward 

 as though deformed. Length of shell 9, greatest width 3.50 

 mm. Largest specimen measures 11 X4.50 mm. 



This species is the same general type as the recent, smaller 

 D. lissotropis Dall, dredged by the Blake among the Antilles in 

 127-248 fathoms. 



Locality. — (Exp'd '16) Zone D, Rio Gurabo near Los 

 Ouemados. 



