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Bulletin 35 



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Page 1 jo 



Echinolampas which differs so much from this that it would 

 generally be regarded as a different and probably a new species, 

 for in some of its characters it is intermediate between the 

 eocene Ech. ovumserpentis and the miocene Ech. semiorbis. I 

 should be inclined to refer it to the Echinolampas antillarum 

 Cotteau (Descr. Echinid. tert. 1875 p. 19, pi. iii., f. 9-1 1) but 

 it has more of a subcircular contour and a conical profile. 



Another Fossil before you is a specimen of Terebratula 

 carneoides. This is the finest I have seen of the species. It 

 recalls somewhat Ter. bican \alicula ta, Schlot. (Bayleand Coquand 

 Foss. de Chili, Mem. Soc. Geol. France, 2 ser. t. 4, pi. viii., f. 17- 

 19) and also perhaps T. haueri, Karst. ( Kreidebildung von 

 Sudamerika, taf. vi., f. 1.) The principal distinction between 

 T. camea of the Chalk and T. carneoides of the West Indian 

 Eocene is the much larger foramen of the latter. From T. 

 depressa, Lam. of the Chalk, T. carneoides is distinguishable by 

 the absence of a Deltidium. These characters it may be admitted 

 seem scarcely weighty enough to separate species, but they ap- 

 pear to be pretty constant. The cretaceous alliances of our Fos- 

 sil are evidently strong, but too much weight must not be at- 

 tached to this point because as pointed out by Davidson the form 

 is represented in the living Fauna by T. vitrea. 



T. carneoides was described by me from the Naparima Beds 

 in quart. Journ. Geol. Soc. 1866 p. 296 pi. xix. f. 2. It was 

 much better figured and described from the Eocene of the Island 

 of St. Barts by Thomas Davidson in Geol. Mag. 1874, page 158 

 pi. viii., f. 1 1. 



PAPER No. 14. 

 NOTES ON THE PASSAGE BETWEEN THE FORA- 

 MINIFERA BEDS AND THE RADIOLARIAN 



MARLS OF NAPARIMA. 

 Read before the Victoria Institute, May 31, 1897 and pub- 

 lished in the "Proceedings" for that year, pp. 170-172. 



On a visit I paid some time ago (November, 1894) to tne 

 South Naparima District, my friend Mr. Ludovic de Verteuil 

 pointed out to me what he believed to be the junction beds 

 between the Radiolarian marls and the Foraminifera beds. On 

 examination I was able to verify the fact. I was also able to 



