112 PROCEEDINGS OF THE GEOLOGICAL SOCIETY. [May 4, 



The conscientious labours of these two last -mentioned men of 

 science have made me decide to include these localities in the geo- 

 graphical range of the flora of the Oolite. 



Some of these forms are represented in the part of my work that 

 I have now the honour to present to the Society, which contains 

 almost all the Catamites of the Oolite ranged according to the classifica- 

 tion lately adopted by Dr. Ettingshausen, who, after observations on 

 a great number of well-preserved specimens, has united the Astero- 

 phyttites to the Catamites. To avoid the multiplication of names, I 

 have left provisionally the Vertebraria and Trizygia of Forbes Royle 

 in the genus Sphenophytlum ; at least I thought it better to do so, 

 until more developed specimens should unveil to us the real nature 

 of these vegetable forms. 



The characters deduced from the sheath, the border of which is 

 divided into strips, or foliaceous appendages, have made me refer to 

 the genus Phytloiheca two new forms, belonging to the Oolite of the 

 Venetian Alps, figures of which will be found in plates 7 and 8 of 

 the second Part of my work, which these notes accompany. Lastly, 

 this second Part also contains the description of two new Equiseta 

 from the same locality, the figures of which have appeared in the 

 first Part. As to the description of the objects represented in plates 

 9, 10, 11, and 12, it will appear in the following Parts of my work. 

 In the meanwhile I request English palaeophj'tologists to give their 

 attention to these plates. 



The reniform leaf (plate 9. fig. 2), with its principal veins twice- 

 forked, and its secondary veins anastomosing, presents the greatest 

 analogy to the sterile fronds of the recent Ptaty cerium. The only 

 fossil genii s which has any resemblance to this figure is the genus 

 Proiorhipis of Dr. Andrae*, founded upon these same analogies. 



The figures 3, 4, & 5 of the same plate (9) present other forms, 

 which will undoubtedly interest English men of science on account 

 of their resemblance to the Tympanophora of Messrs. Lindley aud 

 Hutton, which M. Pomel has wrongly placed among the Atgce, and 

 which is certainly a Eern. These specimens, found in the mountains 

 of our neighbourhood, now confirm the fact which has been already 

 stated by Messrs. Bean and Bunbury. My figures show, in the 

 lower part of the leaf, traces of the foliaceous expansion of the pin- 

 nules, and present characters which induce me to consider this speci- 

 men as belonging to the group of Hymenophytteai. 



Plate 10 represents two specimens of a plant belonging to the 

 Gleicheniacece, to which I have hitherto seen nothing analogous among 

 the plants of the Oolite, unless the bad specimen of the Pecopteris 

 Desnoyersii of Brongniart, found in the Oolite of Mamers, may be 

 considered related to this family. 



Plate 11 gives figures of some remains which I do not hesitate to 

 refer to Odontopteris. 



The genus figured in plate 12 contains species which appear in- 

 timately allied to, if not identical with, the Thinnfetdia of Ettings- 



* Beitr. zur Kenntniss der foss. Flora Siebenbiirgens unci des Banates. Ab- 

 handl. d. K. K. Geologisch. Reichsanstalt, vol. ii. part 3. art. 4. p. 36, tab. 8. fig. 1. 



