OF THE GENUS NIPADITES. 1538 
N. Burtini, Schimper, partim, 7. c. p. 479. 
N. pruniformis, Bower. partim, 1. ¢. p. 14, t. ii. fig. 12. 
Nipa Burtini, Ettingsh. partim, in Proc. Roy. Soc. xxix. p. 393. 
Nipa semiteres, Ettingsh. ibid. 
Drupa minor cordiformis apice subacuto, obtusiusculo vel sub- 
acuminato, spe vix longior quam lata, interdum angustior; epi- 
carpio levi; mesocarpio cum fibris densis longitudinalibus. 
The specimens vary in size from 1-2 inches long, 7-14 inches 
broad, and 6-10 lines thick. Many are so strongly pyritized 
and others so worn, that traces of the epicarp are rarely to be 
seen ; transverse fibrils are nowhere exposed. 
Bowerbank’s figured specimen of NV. semiteres (Foss. Fr. Lond. 
Clay, t.iv.f. 2) I have seen in the British Museum ; it cannot, I 
think, be separated from N. cordiformis. Here, too, I place 
N. pyramidalis, Bowerb., the figured specimen of which is also 
extant ; its regular pyramidal shape may be due to its position at 
the top of a head, or somewhere where pressure is evenly dis- 
tributed on all sides. 
NV. pruniformis, Bowerb., probably represents unripe fruits of 
this or the next species, or both. 
Locality. Sheppey (London Clay). 
NipavitEs ELLIPTICUS, Bowerb. 1. c. p. 11, t. ii. figs. 1-8; 
Unger, Gen, et Sp. p. 827. 
N. Bowerbankii, Ettingsh. partim, in Sitzb. Akad. Wiss. Wien, viii. 
(1852) p. 492. 
?.N. pruniformis, Bowerb. partim, 1. c. p. 14, t. ii. f. 11. 
Nipa elliptica, Ettingsh. in Proc. Roy. Soc. xxix. p. 393. 
Drupa minor, elliptica, compressa, sepe in facie una complanata, 
apice obtuso; mesocarpio cum fibris longitudinalibus densis, 
fibrillis transversis subjacentibus in solo specimine apparentibus. 
The fruits vary in size from 13-1} inches long, 13-15 lines 
broad, and 5-7 lines thick. 
Locality. Sheppey (London Clay). 
NreapitEs Heserti, Watelet, Pl. foss. du Bassin de Paris, 
p: 92, t. xxix. figs. 2 & 3; Schimper, Traité Pal. Vég. p. 480. 
Drupa majuscula, late elliptica, quadrangularis, compressa ; 
epicarpio levi; mesocarpio fibroso. 
Judging from the figure and description, near NV. elliptica, 
Bowerb., but more globose. 
Locality. Issy, near Paris (Calcaire Grossier). 
