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82 CONTRIBUTION TO THE PALEONTOLOGY OF TRINIDAD. 



" Length 26 mm.; breadth of the last volution 18 mm," 



Type locality. Rio Maria Farinha beds, State of Pernambuco, Brazil. 



Remarks. — Two fragments of a Trophon, probably of this species, were found at 

 Soldado, but their condition is such that a positive identification is not possible. 

 They may have constituted a variety of Dr. White's species, for the sculpture of 

 transverse raised lines is closer and less regular, and one shell evidently was con- 

 siderably larger than the Brazilian type. 



Locality. — Bed No. 2, Soldado Rock, Gulf of Paria. 



Geological horizon. — Midway Eocene. Equivalent to the Midway of Alabama 

 and of the Rio Maria Farinha beds, State of Pernambuco, Brazil. 



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Genus PURPURA Bruguiere, 1789. 

 Purpura sp. indet. Plate XII, Figure 4. 



A fragment of an interior mould of a species of Purpura was found south of 

 Pitch Lake. 



In the general form and presence of two rows of nodules on the periphery of 

 the body whorl it recalls young shells of the recent species Purpura hcemastoma 

 Linn, of which it is apparently an ancestral form. 



No positive identification is possible because of the very imperfect condition 

 of the fossil. 



Locality. — Southern main road just south of Pitch Lake, Brighton, Trinidad, 

 in a yellowish-brown, ferruginous marl. 



Geological horizon. — Upper Oligocene. 



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Cymia woodii Gabb. Plate XI, Figures 9, 10. 



Fasciolaria Woodii Gabb, Jour. Acad. Nat. Sci. Phila., 2d ser 

 Conrad, Proc. Acad. Nat. Sci. Phila., XIV, p. 561, 1863. 



IV, p. 375, pi. 67, fig. 7, 1860; 



Fasciolina Woodii Conrad, Am. Jour. Conch., Ill, p. 186, 1867. 



Cuma tectum Gabb, Trans. Am. Phil. Soc, n. s., XV, p. 214, 1873. 



Not Cuma tectum of Kiener (Pyrula tectum) , nor of Wood (Buccinum tectum), nor of Reeve 



(Turbinella tectum). 

 Cymia Woodii Dall, Trans. Wagner Inst. Sci., Ill, p. 155, 1890. 

 Fasciolaria Woodii Whitfield, Monograph U. S. Geol. Surv., No. XXIV, pp. 98-99, figs. 7, 8, 



1894. (Gabb's type refigured.) 

 Purpura (Cuma) Woodii Guppy, Canadian Inst. Trans., p. 390, 1909. 



GaWs original description. — "Fusiform; whorls four or five, flattened so as to 

 make the sides of the spire nearly straight; outer lip plain; columella with one 

 prominent fold; canal moderate, umbilicus nearly obsolete; surface marked by 

 numerous revolving ribs which exhibit a slight tendency to alternate in size. 



"Dimensions.— Length 1.3 in., width of body whorl .8." 



Locality. — Miocene marl, near Shiloh, Cumberland Co., N. J. 



Remarks. — The Cymia from Trinidad is very like specimens of Cymia tectum 

 Wood, now living on the west coast. On comparing the fossil with shells in the 

 Newcomb collection that were found living on the coast of Ecuador, the spires 

 are almost exactly alike, but there is a difference in the contour and proportional 

 lengths of the body whorls. The most striking difference, however, is that the 



