AEAUCATllTfiS. 



135 



In one of the specimens in the York Museum, described by 

 Carruthers the cone is seen in longitudinal section ; a broad 

 central region, representing the stout cylindrical axis, is occupied 

 by a mass of pisolite to which numerous cone-scales are attached. 

 The scales are shown in section, and in several of them one sees 

 a single seed lying in a cavity occupying the proximal end of the 



Fig. 16. — Araucarites oolitiem (Carr.). Surface-Tiew of part of the mould in 

 whicli the type-specimen (cast) of Araucarites Sudlestoni, Carr., was 

 emhedded. From a specimen in the Yotk Museum. Nat. size. 



scale, precisely .as in Araucarites oolitious from Northamptonshire. 

 At the apex of the specimen the vascular cylinder of the cone-axis 

 is seen in section, but the minute structure is not preserved. 

 Another specimen represents the pedunculate base of the cone in 

 which the scales are seen in end-view ; they reach a breadth of 

 1 -4 cm., and may fairly be described as winged. Text-fig. 16 shows 



Fig. 17. — Araucarites ooliticus (Carr.). A, scale in surface-view, with end of 

 seed projecting ; B, view of proximal end of scale ; C, surface-view of cone. 

 From specimens in the Northampton Museum. Nat. size. 



a few of the distal ends of cone-scales seen on the mould made 

 by the cone in the oolitic rock : a slight ridge extends across the 

 end of each cone-scale, as in Araucarites spharocarpus (PI. XIII. 

 Figs. 3-4). 



It is possible that Araucarites spJimrocarpus may he specifically 

 identical with A. ooliticus, but it is probably wiser to retain both 

 specific names. I have, however, no hesitation in regarding them 

 as very closely allied forms belonging to the section Eutatta of 



