CIAIOPHLEBIS. 149 



Text-fig. 23. (Stockholm Museum of Palseobotany.) 

 This specimen, for which I am indebted to the kindness of 

 Professor ITathorst, who also sent me an acciu'ate sketch of the 

 portion shown in the figure, illustrates the manner of occurrence 

 of the sori. The sporangia cannot be made out with any degree 

 of clearness, but they appear to have been borne in semicircular 

 pocket-Uke depressions on the edges of the fertile segments. Cf. 

 V. 3653,(P1. XV. Eig. 6). 



Pio. 23. — Cladophlehis lobifoUa (Phill.). From a specimen and drawing 

 kindly lent by Professor Nathorst. 



V. 3657. Part of a large pinna with pinnules ranging in length 

 irom 1"5 to '7 cm. ; the individual segments agree precisely with 

 those of Fig. 6, PI. XV. 



V. 3938. Small pieces of two pinnae with pinnules -7 cm. long, 

 intermediate between the segments of such a specimen as that of 

 Pig. 6, PI. XV. and the large fonns like V. 2519, 39,257 

 (Text-rfig. 21), etc. Cf. ^ Newropteris undulata,^ L. & H., 

 pi. Ixxxiii. 



V. 3939. An imperfectly presei-ved specimen, with pinnules of 

 median length ; the three lowest pinnse show the large basal 

 segments. 



Upper Shale, Gristhoi-pe Bay. 



Other specimens ;— V. 2519, V. 3659, V. 3933, 13,489, 39,229, 

 39,258. 



