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74 CONTRIBUTION TO THE PALEONTOLOGY OF TRINIDAD. 



narrow, rounded riblets of which there are eight on the last volution; transverse 

 sculpture in the convex part of the whorls of rather coarse spiral threads, between 

 which revolve sets of about five very delicate strise visible only with a lens; else- 

 where the striae are fine and subequal. 



Height of fragment 18, greatest width 10 mm. 



Remarks. — In the rather sudden increase in diameter of the body whorl this 

 species recalls the outline of Fusus subtenuis Heilprin 48 from the Lignitic Eocene 

 of Alabama, but the type of sculpture is wholly different. For a sculpture re- 

 sembling that of F. meunieri we must turn to F. interstriatus Heilprin also from 

 the Lignitic Eocene of Alabama. In that species there is a similar intercalation 

 of groups of fine striae between coarser threads, but it is all over the surface of 

 the shell, and not merely, as in the Soldado shell, on the regions of greatest con- 

 vexity of the whorls. 



Locality. — Bed No. 2, Soldado Rock, near the Serpent's Mouth in the Gulf of 

 Paria. 



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

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



Named in honor of Professor Stanislaus Meunier, Musee d ? Histoire Naturelle, 

 Paris, as a souvenir of delightful hours spent in geologizing with him in the fields 

 and forests of France. 



ES. 



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Fusus mohrioides new species. Plate X, Figure 21. 



Description. — Shell of moderate size, known whorls four; ornamentation of 

 transverse, almost spinous nodules, strongest on the penultimate volution where 

 there are about ten, apparently becoming obsolete on the body whorl; and of 

 spiral threads of which three more pronounced than the rest revolve over the 

 rows of nodules. 



Height of fragment 22, greatest width 16 mm. 



Remarks. — The single specimen of this shell obtained from Soldado is so im- 

 perfect that at first it seemed better not to found a new species upon it. But an 

 examination showed that certain well defined characters were still retained even 

 in its fragmentary condition. 



These characteristics ally it rather closely with Mr. Aldrich's Fusus mohri^ 

 The figure of that shell does not represent its sculpture at all well, but on com- 

 paring the Soldado form with specimens of mohri from the Lignitic Eocene of 

 Matthew's Landing, Alabama, the nodules of the two shells almost match, and 

 the increase in thickness of the three or four spiral threads, when they revolve 

 around the rows of nodules, is also very marked in the Alabama shell. The species 

 are certainly nearly related, though probably specifically distinct. 



Locality. — Bed No. 2, Soldado Rock, near the Serpent's Mouth, Gulf of 

 Paria. 



Geological horizon. — Midway Eocene. 



48 Proc. Acad. Nat. Sci. Phila., p. 371, pi. 20, fig. 4, 1880. 

 « Bull. Am. Pal., vol. I, p. 64, pi. 3, fig. 6, 1895. 



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