235 Dominican Fossils — Maury 71 



The nearest fossil ally is the larger, Pliocene, M. limonensis 

 Dall, from Costa Rica. The recent analogue and probable de- 

 scendant is M. oblonga Swainson, living off the Bahamas. 



This species is named in honor of Mrs. Christine-Ladd 

 Franklin of New York City, Chairman of the Sarah Berliner Fel- 

 lowship Committee. It is a slight token of appreciation of her 

 confidence from the beginning in the writer, and in the success 

 of the Santo Domingo Expedition. 



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

 rn ados. 



Marginella maoensis, n. sp. 

 Plate 11, Figure 7 



Shell oblong-ovate, resembling M. apicina Menke in form, 

 but about half as large, with a slightly more prominent spire, 

 and with the body- whorl convex, not medially contracted as in 

 apicina. Whorls four, suture obscure; aperture narrow, widen- 

 ing anteriorly and somewhat abruptly expanding posteriorly; 

 outer lip heavily thickened except anteriorly, closely and finely 

 crenulate within; columella with four plications, the two anter- 

 ior stronger, longer, oblique, the two posterior weaker, nearly 

 transverse. Color pattern consisting of two narrow, well-de- 

 fined dark-gray bands, one almost central, the other anterior, 

 thus dividing the body whorl into three subequal zones; no spots 

 are present. Length 10, width 6 mm. 



Locality. — (Exp'd '16) Bluff 3, Cercado de Mao. (Abun- 

 dant). 



Margi?iella Sowerbyi Gabb 



Marginella Sowerbyi Gabb, Trans. Amer. Phil. Soc, vol. 15, p. 221, 



1873- 

 Marginella Sowerbyi Guppy, Quart. Jour. Geol. Soc. London, vol. 32, 

 p. 528, pi. 28, fig. 1, 1876. 



Characterized by a high spire and grooved columellar folds. 

 The shell measures 15 X 11.50. Collected by Gabb in Santo Do- 

 mingo. 



