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70 CONTRIBUTION TO THE PALEONTOLOGY OF TRINIDAD. 



White's description— " Shell elongate-subovate; spire less than one-third the 

 total length of the shell; volutions six or more in number, convex, marked by 

 moderately strong longitudinal varices, which are crossed by narrow revolving 

 depressions, or grooves, the broadest one of which is at the distal side, near the 

 suture. These grooves usually give the varices a distinctly crenulated aspect, 

 and sometimes the crenulations are so prominent as to appear subspinous. 

 The varices upon the last volution are long, but they become obsolete before 

 reaching the beak, that portion of the shell being marked only by coarse revolving 

 raised lines; beak somewhat narrow; aperture elongate, acute posteriorly, and 

 ending anteriorly in a narrow, short, slightly deflected canal; outer lip thin; inner 

 lip bearing two well defined folds. 



"Length 22 mm.; breadth of the last volution 10 mm." These are the 

 dimensions of the example figured on Plate X. Some of the examples in the 

 collection are fully one-third larger than this. 



The Brazilian collections contain a considerable number of examples of this 

 species, but most of them are imperfect. 



Remarks. — As later studies have shown that this Brazilian shell is not identical 

 with the Cretaceous species from southern India that was identified by Forbes 

 and Stoliczka with Sowerby's radula, the writer would suggest naming the shell 

 in honor of Dr. C. A. White, as a token of his great contribution towards our 

 knowledge of the Brazilian Cretaceous and Tertiary faunas. 



As will be seen by the description given above, this shell has much in common 

 with V. rugata Conrad, of the Midway Eocene of Texas and Alabama. 



Locality. — Olinda and the Rio Maria Farinha beds, and also at Ponto das 

 Pedras, all three localities being in the State of Pernambuco, Brazil. 



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

 and to that of bed No. 2, Soldado Rock, Gulf of Paria. 



Volutilithes sp. indet. Plate X, Figure 11. 



A small and very fragmentary shell, apparently a young Volutilithes, was 

 found at Soldado in the Lignitic horizon. It is too imperfect to identify or 

 describe; but on comparing it with young shells of V. petrosus from the Lignitic 

 beds of Wood's Bluff, Alabama, it shows considerable resemblance to them. 



Height of shell 13 mm. 



Locality.— Bed No. 8, Soldado Rock, Gulf of Paria. 



Geological horizon. — Lignitic Eocene. 



Genus LYRIA Gray, 1847. 

 Lyria wilcoxiana Aldrich. 



Lyria f sp. Dall. Trans. Wagner Inst. Science, vol. Ill, p. 69, 1890. 

 Lyria wilcoxiana Aldrich, Geol. Surv. Alabama, p. 243, pi. 12, fig. 4, 1894. 

 ? Lyria wilcoxiana Harris, Bull. Am. Paleont., vol. I, p. 199, pi. 8, fig. 5, 1896. 



Aldrich' s original description. — " Shell rounded fusiform, whorls four, spire 

 blunt, first three whorls smooth, body whorl transversely ribbed, the ribs rather 



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