THE TERTIAKT MICROZOIC FOEMATION^S OP TRINIDAD. 523 



fault bringing up (as I believe) the lowest beds of the JSTaparima 

 Series, Nos. 6, 7, and 8. Some of these appear to have been 

 deposited in shallow water, and contain compact dark-coloured 

 limestone in irregular masses. Such rocks occur at the railway- 

 station as well as at Bontour Point, as already observed. Though 

 they are full of fossils, I have not found it possible to obtain any in 

 a condition for specific identification. The generic position of some 

 can be made out, and it is not unlikely that one or more may be 

 identical with Manzanilla fossils. The more resisting nature of 

 these harder beds has given rise to the protruding bluff of Bontour 

 Point, and their extension westward into the Gulf is marked by 

 rocks standing out of water to a height of several feet. The most 

 prominent of these is a small islet called Parallon, composed of a 

 fossiliferous limestone, the chief contents of which are Ampliistegina^ 

 Nummulina^ Spirorbis {Motularia) clymenioides, and NuUipores. 

 At the time I first knew it (1859) this islet was a pinnacle nearly 

 sixty feet high, but it was cut down to less than half by a gentle- 

 man who intended to build a house on it, a purpose frustrated by 

 his death. In this series (JSTo. 7) and perhaps inferior to the 

 Ampliistegina-Tock comes the Orhitoides (asphaltic)-bed which was 

 figured in the ' Geological Eeport,' and described by me in 1863 and 

 1866. Since then I have met with some interesting specimens 

 showing the probability that the asphaltic matter with which this bed 

 and the neighbouring ones are impregnated was introduced after their 

 deposition and consolidation. These specimens consist of indurated 

 portions of the Orhitoides-hed, composed almost entirely of Orhit- 

 oides, Nummulina, and Tinoporus, identical in fact with the other and 

 more friable portions of the bed, but without any contained asphalt. 

 These are indeed portions of the Orbitoides-bed in which induration 

 has preceded and excluded the asphalt. 



This series of beds (Nos. 6, 7, and 8 of the section) has supplied 

 several fairly preserved fossils, of which I gave a list in this Journal, 

 vol. xxii. (1866) p. 572. Of these Echinolampas ovumserpentis, 

 Hani na porif era, and Terebratula carneoides have recurred in the 

 Eocene limestone of St. Parts, one of the north-eastern West India 

 Islands,^ while a specimen of Rotularia {Spirorbis) clymenioides 

 has been given to me as coming from the argiline of jN^aparima 

 Hill, and another as having been found in the Pointapier cutting, 

 both Cretaceous according to the Geological Survey. I have already 

 noted that the Rotularia is abundant in the Amp7iistegina-T ock. 

 These lower shallow-water beds of the Naparima Series are probably 

 brought up here by the fault shown in the section under the heading 

 ' Paradise Gate,' and they may be, as I have already observed, a 

 continuation of the somewhat similar beds near the railway-station, 

 the rocks under Hospital Hill being Globigerina-m2iY\s, like those 

 between Bontour Point and Sipero Creek. I may note that none of 

 the limestone-beds retain their characters for any great distance. 



^ Duncan, Quart. Journ. Geol. Soc. vol. xxix. (1873) p. 548. See also 

 Davidson, Geol. Mag. for 1874, p. 158. 



Q. J. G. S. No. 192. 2 



