LESQUESEux.] FOSSIL PLANTS FEOM POINT OF E0CK8. 301 



The central part of this organism, representing the spathe of a water- 

 plant, is oval, somewhat inflated, narrowed to a round pedicel, and sur- 

 rounded by a margin or fringe half a ceotimeter broad, cut or emargin- 

 ate at the top. The middle part is slightly inflated and striate in the 

 length. The border fringe is opaque, and does not show any ap- 

 pearance of nervation. Comparing it to a figure of Otteliaalismoides, 

 Pers., from Ceylon, kindly communicated by Saporta, the fossil plant 

 seems in perfect concordance of characters with the living. 



Habitat. — Point of Eocks, Dr. F. V. Hayden, represented by one 

 specimen only, in a good state of preservation. 



12. Sabal Geayana, Lesqx. 



Trans. Am. Philsoc, vol. xiii., p. 412, T; xiv., figs.4-6. 



Prond apparently large, represented by fragments only ; rachis flat, 

 elongated linear-acuminate, six to eight inches long, enlarged at jts 

 base and rounded on both sides ; rays numerous, gradually enlarging 

 upward, half to two and one-half centimeters broad, marked with dis- 

 tant and distinct slender veins. The characters of this species have 

 been described in detail as quoted above. The species is always easily 

 identified by its slender though distinct and equally distant veins. 



Habitat. — Point of Eocks, JDr. F. V. Hayden. 



13. Deyophtllum ceenatum, sp. nov. 



Leaves oblong, lanceolate, abruptly oblique to the petiole or subtrun- 

 cate ; borders deeply, regularly crenate ; substance of the leaves some- 

 what thick, subcoriaceous 5 surface rough ; nervation pinnate, middle 

 nerve flat and broad, lateral veins diverging sixty to sixty-five degrees, 

 flat, distinct, slightly curving in ascending to the borders subcampto- 

 drome, the veins forking up under the sinuses of the teeth, and a branch 

 passing up along the borders from the point where the veins enter the 

 teeth ; nervilles thick, in right angle to the veins, forming, by subdivision 

 and anastomosis, a square or indistinctly polygonal areolation. 



Of all the species described of this genus, none is comparable to this 

 one, which is especially distinct by its broadly obtusely dentate borders. 

 It is represented by two fragmentary specimens. 



Habitat. — Point of Eocks, Br. F. V. Hayden. 



14. Deyophyllum subfalcatum sp. nov. 



Leaf subcoriaceous, linear-lanceolate, acuminate or sharply pointed; 

 borders regularly serrate with short blunt teeth turned upward ; lateral 

 veins parallel, diverging thirty to forty degrees, straight to the point of 

 the teeth ; fibrillse close, thin but distinct, simple or ramified in the 

 middle, the upper ones joining nearly in right angle, a branch veinlet 

 which pass from near the point of the lateral veins under the sinuses, and 

 follows along and close to the borders. 



There is only a fragmentary specimen of this species, the upper half 

 of a leaf. By its form and nervation, it seems at first referable to the 

 genus Castanea, and, truly, it would be easy to find leases of the present 

 C. vesca apparently perfectly similar to this fossil one. There is, how- 

 ever, a difference in the areolation, or in the arrangement of the tertiary 

 veins. In these primary types of Quercus and Castanea described under 

 the name of Dryophyllum, the upper branch of the secondary veins 

 passes from near the point of the vein under the sinuses and closely 

 follows the borders, which thus sometimes appear narrowly marginate, 

 and is joined nearly at right angle by the upper fibrillfe. This charac- 



