378 MR ROBERT K1DST0N ON THE FOSSIL FLORA OF THE 



the examination of several such specimens I am led to conclude that the fruit 

 of Pec. Miltoni, Artis, sp., and Pec. abbreviata, Brongt., is essentially the same, 

 and therefore there exists no specific difference between Pec. Miltoni and Pec. 

 abbreviate!, hence Brongniart's species must be united with Pec. Miltoni, 

 Artis, sp. 



Remarks on some Figures of the Species. 

 Pec. Miltoni, Gerinar, Vers. v. Wettin u. Lobejun, Heft 6, pi. xxvii. 1849. 



The figures given here are very characteristic of Pec. Miltoni, Artis, sp. 

 The nervation agrees entirely with that of the specimens from Lancashire, 

 Yorkshire, and Derbyshire. His fig. 2 corresponds to Artis's type. 



I have received from Dr Weiss a specimen of Pec. Miltoni from Wettin, 

 which confirms this opinion. 



Geinitz, Vers. d. Steinkf. in Sachsen, 1855. 



Cyatheites Miltoni, pi. xxx. figs. 5, 6 ; pi. xxxi. figs. 1-4. 

 Cyatheites Miltoni, var. abbreviatus, pi. xxx. figs. 7, 8. 



Of these, fig. 5 (pi. xxx.) is characteristic of Artis's species, but I have never 

 seen the fruit as represented at fig. 6. Fig. 8 (pi. xxx.) probably corresponds 

 to my woodcut, fig. 2. PL xxxi. fig. 4, gives a fair idea of the position of the 

 fruit. Fig. 3 probably does not belong to Pec. Miltoni ; it is not, at all events, 

 a characteristic figure of the species. 



It must be noticed that in all the fruiting examples given by Geinitz the 

 sori are immature, and only represented by circular swellings. Were the sori 

 more fully developed, they would occupy a much larger area of the surface of 

 the pinnule. 



Ilawlea Miltoni, Stur, Carbon-Flora, pi. xlix. fig. 1, 1885. 



Though no enlarged details of this specimen are given, the fossil as repre- 

 sented in the plate is absolutely identical with typical Pec. Miltoni. All the 

 other figures in this plate are too indistinct to admit of any criticism. PI. xl. 

 figs. 3, 4, I exclude from Pec. Miltoni. 



Pec. Miltoni, Sterzel, Flora d. llothliegenden im nordiv. Sachsen, pi. i. figs. 1-7.* 



The figures given here, though small, possess the characters of Pec. 

 Miltoni. 



* In Dames and Kayser, Palceontolor/ische Abliandl., vol. iii. Heft. 4, p. 237, Berlin, 1886. 



