95 



apex identical -with that of 39,350 (I"ig. 7) and bearing on the 

 lower part of the frond fertile pinnules with well-preserved 

 sporangia. The pinnae of these specimens are identical with those 

 of the frond figured by Lindley & Hutton as Pecopteris dentata. 



A piece of Nilssonia convpta occurs in association with the 

 Todites leaf. 



Scarborough. 



39,226. PI. XIV. Fig. 5. 



This specimen shows portions of large pinnae almost at right 

 angles to the rachis. The longest pinnules are about l"3cm. in 

 length, and of thin texture ; there are no definite teeth, but the 

 margin of some of the segments is slightly irregular or wavy. 

 Towards the tip of the pinnae the segments assume a more falcate 

 form, but in the basal portions they are practically straight. 



Labelled by Bean Neuropteris recentior. Cf. specimens 134,992, 

 13,505, etc. 



Oolitic Shale, Gristhorpe Bay. Bean Coll, 



13,494. PL XIV. Fig. 2. 



This type of specimen is very difficult to determine ; it bears 

 :a close resemblance to some forms of Cladophlehis denticulata 

 (Brongn.), but the broad bases of the pumules and the habit of 

 the frond point to Todites WilUamsoni as the more likely species. 



Gristhorpe Bay. Presented ly Br. Mmrrwy, 



V. 2521. An imperfectly preserved fertile frond, labelled by 

 Bean Pecopteris curtata. Long pinnae are attached at a wide 

 angle to the broad rachis ; the fertile pinnules have a somewhat 

 ragged outline, and are longer and narrower than the sterile 

 pinnules of such a pinna as that of Fig. 5 (39,226). The specimen 

 is evidently from the lower part of a fertile frond, where the 

 pinnules are longer and less crowded on the pinnae than in the 

 smaller fronds of the type represented in PI. XV. Fig. 1 (13,491). 



v. 3654. Part of a large frond, showing in some of the pinnae 

 a gradual transition from the longer and straighter pinnules to 

 the shorter, falcate, and more acutely pointed segments ; a passage 

 from the form originally described as Pecopteris recentior to that 



