i60 CirPEESSINOXTLON; 



Genus CUPRESSINOXYLON, Goppert. 

 [Foss. Conif. p. 196, 1850.] 



As Knowltou points out, this generic name tas been used in 

 B, eompreliensive sense; he remarks — "As our knowledge of the 

 internal organization of living Conifers has been gradually worked 

 out by Goppert, Kraus, Beust, and others, the fact has become 

 more and more apparent that types founded upon these characters 

 alone must be regarded in a measure as comprehensive." ^ 



Schenk defines Cupressinoxyhn as foUows : — "Annual rings 

 distinct, narrow. Eesiniferous parenchyma abundant. Cells of 

 the medullary rays thin-walled, with simple pits in their radial 

 walls. Types included under this head : Cupressaoese, Podocarpese, 

 Cunninghamia, Taxodineae, Phyllocladus, Baorydium, Ginkgo, 

 Saxegothea, Abies Wehhiana."' 



In 1898 Mr. C. A. Barber' published a careful description of 

 a type of Lower Greensand fossil wood from the Isle of Wight 

 under the name Cv^pressinoxylon vectmse, and discussed the value 

 of the histological characters on which this and other genera have 

 been founded. 



The material which I have described from the Lias of Whitby 

 is too meagre to admit of a complete diagnosis, and it is with some 

 hesitation that the generic name Ci/ipressinoxylon has been selected. 

 One characteristic feature of this genus is the presence of resin- 

 cells among the tracheids, but I have not recognised in the few 

 available sections any certain indications of resiniferous parenchyma. 



Cupressinoxylon Barberi, sp. nov. 



(PI. VII. Pigs. 1, 4, and 6.) 



The sections referred to this species exhibit certain features 

 which distinguish the wood from that of Araucarioxylon ; for the 

 £ake of convenience I have designated this type C. Barleri, after 

 my friend Mr. C. A. Barber, the author of a thorough and critical 



' Knowlton (89), p. 43. 



» Schenk, in Zittel (90), p. 862. 



3 Barber (98). 



