195 Dominican Fossils — Maury 31 



which places it in the T. incequalis group. An incomplete speci- 

 men measures 50 X 10, and includes eleven whorls. Dr. Dall's 

 type measures 62 X 1 1.5 mm. The type locality is Potrero, Rio 

 Amina. 



Locality. — (Exp'd '16) Bluff 1, Cercado de Mao. 



Terebra Petiti, n. sp. 

 Plate 4, Figure 4 



Shell rivaling in size the recent Oriental T. flammea Linne. 

 Our single specimen is decollate but seventeen whorls remain. 

 The earlier of these show much the same sculpture as T. intzquaUs 

 of which I at first thought this might be a large variety. Length 

 of incomplete shell 113, greatest diameter 19 mm. 



Clearly this splendid Terebra is of the T. incequalis stock. 

 Its living ally and probable descendant is a rare shell, T. texana 

 Dall, found on Matagorda Island, Texas, (Proc. U. S. Nat. Mus. 

 No. 1264, p. 502, pi. 29, fig. 8, 1902). But the two sub-sutural 

 bands in the recent shell occupy two-thirds of the whorl instead 

 of about half as in the fossil, and the longitudinal riblets are less 

 continuous and less arcuate than in the fossil. Dr. Dall says T. 

 texana is the only true Terebra sensu stricto living on our coasts. 

 Apparently the western migrants have lived on in the Gulf of 

 Mexico but the ancestral members have become extinct in the 

 Antilles. 



I take great pleasure in dedicating this fine Terebra to Mr. 

 Isaac Petit, American Consul at Monte Cristi, as a mark of ap- 

 preciation of his kindness to our party, his efficient aid, and his 

 sincere interest in the welfare and success of our Expedition. 



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

 mados. 



Terebra gatunensis Toula 

 Plate 4, Figure 5 



Terebra dislocata Gabb (in part), Trans. Amer. Phil. Soc, vol. 15, p. 

 225, 1873. Not T. dislocata Say. 



