Yol. 55.] Ol!f THE OCEAXrC DEPOSITS OF TEIj!^IDAD. 179 



and uses the name jN'aparima Beds for the whole series seen in 

 the cliffs, from a little south of the Taruba Creek to the Oropuche 

 Lagoon, south of San Pernando. As he refers to the statement 

 made by Wall & Sawkins that marls belonging to their Naparima 

 Series are exposed in the cliffs both north and south of San Fernando, 

 and as he evidently thinks that the beds are parts of one continuous 

 series and are all of Eocene age, one must suppose that he con- 

 sidered the older name to have the priority. 



In his diagrammatic section of the beds seen in the cliffs he 

 numbers separate portions from 1 to 18 (ojy. cit. p. 522). Of 

 Nos. 1 & 2, which adjoin Taruba Creek, he says that they ' appear 

 to belong to the j^ariva Series of the Geological Report, supposed 

 to be inferior in position to the I^aparima Marls of that Report.' 

 He, however, inclines to regard them as superior to the ' Eocene 

 Naparima Marls ' and refers them to the Miocene. Erom a later 

 sentence, and from remarks in a previous paper, it would appear 

 that he does not limit this opinion to the clays of Taruba Creek, 

 but regards the whole jS'ariva Series as superior to the Naparima, 

 and as (partly) the equivalent of the Caroni Series, which lies on 

 the northern side of the central ridge. 



Eeturning to the series which in the paper that we have just 

 quoted Mr. Guppy calls ' the Xaparima Beds,' including therein the 

 San Fernando Beds of his previous papers, we find that it comprises 

 a number of different rock-groups, clays, marls, shales, and lime- 

 stones of various colours. They are tilted up at high angles and 

 are broken by numerous faults, and thus from a mere inspection of 

 them it is impossible to be sure that they belong to one series or 

 group of beds. Their community of age could be proved only by 

 a community of fossils, and Mr. Guppy makes no endeavour to show 

 that such is the case. 



Moreover, taking Mr. Guppy's own description, the beds seem 

 to separate themselves naturally into two groups. Thus, he de- 

 scribes Nos. 3 & 4 as ' a series of red, black, and variegated marls 

 [? clays] . . . which contain bands of limestone . . . with fossil mollusca 

 similar to those in jS'o. 7.' He considers these beds to be repeated 

 farther south at Bontour Point, where they are brought up by a 

 fault and are numbered 6, 7, & 8. These beds are succeeded by 

 No. 9, called ' the Nucula-'heds,' and elsewhere described as hard 

 marls and blue clays. These numbers form one group, and they 

 include all the beds which yielded the fossils previously found 

 by Mr. Guppy and for which he claims an Eocene age. 



The other group includes Nos. 5, 10, 11, 12, 16, & 17 ; these 

 are all Glohigerina-marls, containing a large foraminiferal fauna, 

 which, however, does not include the Nummidites and Orbitoides 

 found in the first group. The fauna is essentially a deep-water one, 

 and has no connexion with the fauna of the true San Fernando Beds. 



Nos. 13 & 14 are spaces where no beds are seen. No. 15 is a shell- 

 bed, the relations of which are doubtful ; but it certainly belongs 

 to a shallow-water formation. No. 18 indicates the supposed 

 position of the radiolarian earths beneath the Oropuche Lagoon. 



n2 



