Fructification of two Goal-measure Ferns. 27 



It is impossible to say to which fern the Baillieston fructi- 

 fication belongs. As the fruiting portion of ferns often 

 assumes an outline so entirely different from that of the barren 

 condition, I refrain from any suggestion upon this point. 



Locality. — Ellismuir, Baillieston, Lanarkshire. 



Horizon. — Lower Coal-measures : shales above the " Kil- 

 longue " Coal. 



Note. — Since this paper was put into type I have been 

 favoured by my friend, M. Crepin, Director of the State 

 Botanical Gardens, Brussels, with two fruiting specimens of 

 Calymmatotheca schatzlarensis, Stur, from one of the original 

 localities — Charbonnage de I'Agrappe, Framerier (Fosse 

 Grand Trait), Belgium. With these I have compared the 

 Yorkshire examples, and find that the plant I had named 

 Crossotlieca fimhriata is the Calymmatotheca schatzlarensis , 

 Stur. The woodcut given by Stur of the fruit of his fern 

 {I. c. p. 238, fig. 40) is therefore quite misleading, and does 

 not at all represent the fruit of the plant from the same 

 locality which has been forwarded to me by Mons. Crepin 

 under Stur's name. In fact the description Stur gives of 

 his admittedly badly preserved fruit leads one to inquire 

 whence the evidence has come for the creation of his fig. 40. 



The fossil remains, however, in the genus Crossotheca, but 

 under the name of Crossotheca schatzlarensis, Stur, sp. 



Stirling, 

 Jime 6, 1888. 



EXPLANATION OF PLATE I. 



Crossotheca Jimbriata, Kidstou. 



Figs. 1-3. Fruiting pinnae. 



Fi(js. 4 & 5. Synangia, enlarged 6^ times. 



Fig. 6. Portion of a synangium, enlarged 18 times. 



Figs. 7 & 8. Fragmeuta of barren pinnas. 



Crossotheca Crepini, Zeiller. 

 Fig. 9. Fruiting pinnule, enlarged 6 times (after Zeiller). 



Cgclotheca hiscriata^ Kiddtuu. 



Fig. 10. Specimen, natural size. 



Fig. 11. Sporangia, enlarged G5 timeo. 



Fig. 12. Sporangia, enlarged iO times. 



