152 MR, A. B. RENDLE’S REVISION 
Drupa lanceolata vel ovato-lanceolata, subacuta vel subobtusa, 
epicarpio levi, quam in Parkinsoni crassiore; mesocarplo cum 
fibris longitudinalibus sub epicarpio arcte confertis, tum crassi- 
oribus sed minus quam in precedente et minus sejunctis, fibrillis 
oblique transversis intertextis. 
The specimens vary in size from 23-3} inches long, 13-14 inch 
broad, and 5-17 lines thick, the thinnest ones being either 
unripe or very much compressed. As in the last species, the 
pericarp forms a thick, generally obtuse apical portion, while 
below it remains thicker than in that species ; the epicarp is also 
thicker, measuring about } line. The outer layer of mesocarp 
with the closely-set finer longitudinal fibres extends in the middle 
of the nut fora depth of about } a line, but is thinner below; the 
thicker fibres are more rarely exposed, when they are seen to be 
less coarse than in V. Parkinsonis, and only from 3-3 line apart. 
The cast of the interior is, in the broader specimens broadly ovate, 
in the narrower oval. 
Localities. Sheppey (London Clay). Schaerbeek (Middle 
Eocene), fide Lyell in Quart. Journ. Geol. Soe. viii. p. 346. 
NipapiTtEs umBonatus, Bowerb. Foss. Fr. Lond. Clay, p. 9, 
t. 1; Unger, Gen. et Sp. p. 827. 
N. clavatus, Bowerb. 1. c. p. 15, t. iii. figs. 4-6 ; Unger, l. c.; ? Lyell, 1. c. 
p- 346, t. xix. figs. 3 & 4. 
N. Bowerbankii, Ettingsh. partim, in Abh. Geol. Reichsanst. viii. (1852) 
p. 491 et in Sitzb. Akad. Wiss. Wien, viii. (1852) p. 491. 
N. Burtini, Schimper, partim, Traité Pal. Vég. p. 479. 
Nipa Burtini, Ettingsh. partim, in Proc. Roy. Soc. l.c. 
Drupa obovata, seepe anguste, et valde compressa, vel clavata, 
apice obtuso vel rotundato umbonato ; epicarpio levi ; mesocarpio 
fibroso, fibris longitudinalibus externis densis, internis velut in 
NV. lanceolato. 
Locality. Sheppey (London Clay). 
The specimens are in most cases much compressed, and prob- 
ably immature. WV. clavatus seems to be a small form. 
NIPADITES CORDIFORMIS, Bowerb. 1. c. p- 18, t. ii. figs. 6-10; 
Unger, l. c. p. 328. 
N. semiteres, Bowerb. 1. c. p. 23, t. vi. figs. 2-4 ; Unger, 1. ¢. p. 329 ; 
Ettingsh. in Sitz. Akad. Wiss. Wien, viii. (1852) p. 492; Schimper, 1. c. 
p. 480. 
N, pyramidalis, Bowerb. 1. c. p. 24, t. vi. figs. 5 & 6; Unger, 1. ¢. p- 329, 
N. Bowerbankii, Ettingsh. partim, 2. c. 
