142 CLADOPHLEBIS. 



"the sterile fronds of Osmundaceous ferns ; the form of tie fertile 

 pinnse does not favour tliis view, and it is more in accordance 

 mth. tie available evidence to refer Brongniart's species to tie 

 QPolypodiacese. Cladophlelis denticulata is represented in several 

 Tmuseums by many large and weR-preserved specimens ; some of the 

 iSnest are to he found in the collections at Whitby and Scarborough, 

 Jiot infrequently labelled by Bean Pecopteris scarburgensis. 



13,495. PI. XIV. Fig. 3. 



A part of the specimen is shown in tie figure. Tie rachis 

 measures 7 '5 cm. in length and 4 mm. in breadth; the longest 

 puma is 12" 5 cm. long, bearing falcated dentate segments agreeing 

 exactly with those of the specimens figured by Brongniart as the 

 type of the species. The pinnules are about l'3cm. in length. 

 A precisely similar form is figured by Lindley & Hutton as 

 .Neti/ropteris ligata. 



Gristhorpe Bay. Presented hy Br. Murray. 



40,518. PL XIV. Kg. 4. 



Two pinnules, represented about twice natural size, showing the 

 fine teeth and the Cladophlelis type of venation. This specimen 

 -agrees with 13,495 (PL XIV. Fig. 3), but on the lower pinnse the 

 ultimate segments are longer, reaching a length of 2 -2 cm. ; they 

 serve to connect the fronds with pinnules of intermediate length 

 with such examples as that shown in Fig. 1 (39,236), in which the 

 ultimate segments are longer. Towards the apex of the pinnse 

 the pinnules assume a shorter and more strongly falcate form. 



Scarborough. Bowerlank Coll. 



39,236. PL XIV. Fig. 1. 



A portion only of this fine specimen is siown in the drawing. 

 The frond has a stout rachis from wiici tie pinnse are given off 

 at an acute angle, bearing falcate pinnules reaciing a lengti of 

 2'8-3 cm. This type of frond is identical with that figured by 

 Lindley & Hutton as Pecopteris insignis ; tie margia of tie segments 

 is finely dentate, as in the type-specimen of P. insignis. 



Oolitic Shale, Scarborough. Bean Coll. 



39,249. PL XX. Fig. 4. 



This somewiat imperfect specimen is labelled by Bean Pecopteris 

 PMllipsii, and it is partly on tie evidence which it affords that 



