AEATJCAEITES. 1 33 



Araucarites ooliticus (Carruthers). 



[Geol. Mag. vol. v. p. 156, pi. ix. figs. 1-6, 1868.] 

 (PI. XIII. Fig. 1; Text-figs. 16-18.) 



1868. Kaidaearpum ooliticum, Carruthers, Geol. Mag. vol. v. p. 156, pi. ix. 

 figs. 1-6. 



1872. K. ooliticum, Balfour, Palaeout. Bot. p. 84, fig. 88. 



1873. Pandanocarpnm ooliticum, Zigno, Flor. foss. Oolit. vol. ii. p. 3. 

 Kaidaearpum ooliticum, Sharp, Quart. Journ. Geol. Soc. vol. xxix. 



p. 290. 



1877. Araucarites Sudlestoni, Carruthers, Quart. Journ. Geol. Soc. 



vol. xxxiii. p. 402, pi. xvii. 



1878. Araucaria Sudlestoni, Hudleston, Proc. Geol. Assoc, vol. v. p. 494. 

 1886. Kaidaearpum ooliticum, Gardner, Geol. Mag. vol. iii. p. 199. 

 1888. Araucaria Sudlestmi, Schenlc, Handbuch, p. 171. 



1890. A. Sudlestoni, Zittel, Handbuch, p. 280. 



1892. A. Sudlestoni, Fox-Strangways, JurasB. Eocks, p. 334. 



1894. I'andanocarpum {Kaidaearpum) ooliticum,Wooiwsa:d., LowerOol.p. 317. 



1895. Araucarites Sudlestoni, Seward, "Wealden Flor. ii. p. 191. 



1896. Kaidaearpum oolitiaim, Seward, Annals Botany, vol. a. p. 214. 



Localities and Horizons. — Kingsthorpe, Northants (Great Oolite) ; 

 Malton, Yorkshire (Coralline Oolite). 



The type-specimen of Araucarites ooliticus {Kaidaearpum ooliticum, 

 Carr.) is in the Northampton Museum ; the type of Carruthers' 

 epecies Araucarites Sudlestoni is in the York Museum. 



The genus Kaidaearpum was instituted by Carruthers in 1868, 

 and defined as follows : — " Fruit composed of pyramidal rhomboidal 

 single-seeded drupes, sessile or sub-sessile on a thickened spadix," ' 

 I have elsewhere' expressed the opinion that the specimens 

 included by Carruthers in Kaidaearpum, and regarded as Mesozoic 

 examples of the Monocotyledonous family Pandanese, are cones 

 of Araucarian plants. This view has been, in my opinion, 

 confirmed by an examination of the type- specimen of Kaida- 

 earpum ooliticum in the ^Northampton Museum. The specimen 

 represents a portion of a cone 9 cm. long, consisting of a 

 cylindrical projecting central portion covered with spirally disposed 

 deep pits or meshes bounded by a framework of crystalline ridges ; 

 attached laterally to this central region, and partially covered 



1 Carruthers (68), p. 153. 

 * Seward (96), p. 213. 



