R. B alien Newton — Fomh from Singapore. 495 



ascertaining the exact length of tlie fossil, altliongh it is probable 

 that it was a much shorter form, such us has been figured by 

 Dr. Yabe from Korea and comjjared with P. pulcheUus of Ileer from 

 Spitzbergen (Koiigl. Svensk. Vetensk.-Akad, Ilandl. [Stockholm], 

 1876, vol. xiv. No. 5, p. 38, pi. ix, figs. 10-14). A slight resem- 

 blance can also be traced to a pinna recently figured by Mr. Seward 

 from the Stonesfield Slate as P. Stone sfieldenais (Catalogue Mesozoic 

 Plants British Museum, Liassic and Oolitic Floras of England, 1904, 

 pi. iii, fig. 4, p. 123), in which a basal notch has been likewise 

 observed. 



Kemains of this plant are frequently found in a poor state of 

 preservation, and only detached pinna3 as a rule are obtained, these 

 being sometimes damaged at their terminations like the Singapore 

 specimens. The species is a very variable one, the pinnge differing 

 considerably in dimensions and the number of parallel venations 

 never being quite the same. Its geographical distribution is ex- 

 tensive. Originally described from the Yorkshire Oolites, it has 

 since been recorded from European countries, Spitzbergen, Siberia, 

 Persia, India (Upper Gondwana Beds), China, Japan, and Korea. 

 For an exhaustive synonymy of the species Mr, Seward's British 

 Museum Catalogue should be consulted. 



Collectors. — Mr. J. B. Scrivenor (Fig. 16) and Dr. Hanitsch 

 (Fig. 17). 



Carpolithes sp. (PI. XXV, Fig. 18.) 



An isolated seed, buried in the matrix, of apparently a Cycadean 

 character has been provisionally i-eferred to the genus Carpolithes. 

 It is of i-ather oblong contour with nearly parallel sides, and bearing 

 a longitudinal rounded ridge on the right margin, which may 

 represent a fractured edge of the outer cuticle of tlie seed. The 

 central oval and convex body, which is possibly the naked seed itself, 

 is minutely and concentrically striated, especially on tlie sides. 



In connection with the remains of Podozamites it is interesting to 

 find a seed of this character in association, as the assemblage is 

 suggestive of a Lower Oolite flora, such as characterise the rocks of 

 the Yorkshire coast, Stonesfield, and the more distant Jurassic 

 regions. 



Dimensions. — Width 7, height 8 mm. 



Collector. — Mr. J. B. Scrivenor. 



EXPLANATION OF PLATE XXV. 

 Fig. 



1. Ooniomya Scrivenori, sp. nov. External view of a left valve, x 2. 



2. G. Singaporemis, sp. nov. External view of a right valve drawn from a wax 



cast of original impression. Nat. size. 



3. G. Sinffajjorends. External aspect of a fragmentary left valve. Nat. size. 



4. Gervillia Hanitschi, sp. nov. External view of natural cast of a left valve. 



Nat. size. 



5. Volsella cf. compressa, Goldfuss. External view of a left valve, x 2. 



6. [PNuculoid shell.] External view of a right valve, showing obscure anterior 



notch. Nat. size. 



7. ? Nuculana sp. External view of a right valve, the dotted line showing 



probable rostration. Nat. size. 



