142 CLADOPHLEBIS. 



the sterile fronds of Osmunclaceous ferns ; the form of the fertile 

 pinnae does not favour this view, and it is more in accordance 

 with the available evidence to refer Brongniart's species to the 

 Polypodiacese. Cladophlelis denticulata is represented in several 

 museums by many large and well-preserved specimens ; some of the 

 finest are to be found in the collections at Whitby and Scarborough, 

 not infrequently labelled by Bean Pecopteris scarlurgensis. 



13,495. PL XIV. Fig. 3. 



A part of the specimen is shown in the figure. The rachis 

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

 pinna 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 1*3 cm. in length. 

 A precisely similar form is figured by Lindley & Hutton as 

 Neuropteris ligata. 



Gristhorpe Bay. Presented by Dr. Murray. 



40,518. PL XIV. Fig. 4. 



Two pinnules, represented about twice natural size, showing the 

 fine teeth and the CladophleUs type of venation. This specimen 

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

 Ihe pinnules assume a shorter and more strongly falcate form. 



Scarborough. Eowerlank Coll. 



39,236. PL XIV. Fig. 1. 



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

 The frond has a stout rachis from which the pinnae are given ofi 3 

 at an acute angle, bearing falcate pinnules reaching a length of 

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

 Lindley & Hutton as Pecopteris insignis ; the margin of the segments 

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



Oolitic Shale, Scarborough. Bean Coll. 



39,249. PL XX. Fig. 4. 



This somewhat imperfect specimen is labelled by Bean Pecopteris 

 Phillipsii, and it is partly on the evidence which it affords that 



