376 PEOCEEDINGS OF THE GEOLOGICAL SOCIETY. [June 4, 



figured in my * Flora Tert. Helvet.' They are very small, oval fruits, 

 with 9 to 10 whorls ; these are partly flat, partly concave, where the 

 spirals project more sharply. The coronula is formed by five very 

 small warts or points. This differs totally from Gliara medicaginula^ 

 Brongn., by its oval (not globose) fruits, and by the greater number 

 of whorls. 



(JhaTOL Escheri is abundant in our Lower and Upper Miocene, 

 from the Aquitanian to the Oeningian stages. 



10. Chaha ttjbeectjlata, Lyell, var. (?), 



It appears to be different from the real Ch. tuberculata, Lyell 

 (Manual of Elementary Geology, p. 210, fig. 189 ; and Salter, in 

 Forbes's Tert. Form. Isle of Wight, pi. 7. figs. 11, 12). The pieces I 

 received (there were but a few, and not weU preserved) are somewhat 

 smaller, and have but eight or nine whorls ; and they have also 

 larger and fewer tubercles than the fruits of Ch. tuberculata. They 

 may form another species, as these differences are also to be seen in 

 Salter's figures of Ch. tuberculata, var., from Hempstead (op. cit. 

 pi. 7. fig. 13). Original specimens of Ch. tuberculata from Bem- 

 bridge are wanting. I am unable to decide this question with cer- 

 tainty. "We must have well-preserved fruits from the Hempstead 

 and Bembridge series. 



Prof. Forbes mentions Char a helicteres, Brongn., and Ch. medica- 

 ginula, Brongn. ; but Salter {op. cit., p. 159) seems to doubt the 

 appearance of these species at Hempstead, and says that no specimen 

 from this locality has been found in the collection. In pi. 7. figs.3-5, 

 he only repeated the figures of Brongniart ; therefore we are not yet 

 quite sure whether these two species appeared at Hempstead. Ac- 

 cordingly we are obliged to omit these species of Chara in the com- 

 parison of this locality. 



Postsceipt. — I have just received several specimens of the Pabn 

 of Hempstead from Mr. Pengelly. They undoubtedly belong to Sahal 

 major. Two of the specimens have still the end of the petiole and 

 the base of the leaf. The rachis is 44 miUims. broad at the base, 

 very long, and gradually tapering (as the specimen figured in my 

 ^ Flora Tertiaria,' vol. i. pi. 36. fig. 2). The rays are attached on 

 both sides ; they wholly agree, in the insertion, form, and venation, 

 with Sdbal major, and indeed with the large form which Unger had 

 called Flabellaria maxima (Chloris Protogaea, pi. 12). This species 

 wholly differs from Flabellaria Lamanonis, Brongn., and therefore 

 belongs to a Palm which extended over the whole of Europe in the 

 Lower Miocene Period. — 0. H. 



EXPLAJS-ATION OF PLAT:^: XVIII. 

 Illustrative of Plant-remains from the Hempstead Beds of the Isle of Wight. 



Fig. 1. Remains of Sequoia CouUsicB. Fragments of cone. 

 2. . Fragments of twigs and of cone. 



3. Sequoia CouUsicB. Fragments of cone and twig. 



4. — . Twig. 



