XLVIl] CALLITRITES 339 



Cenomanian of Moravia where it is represented by both sterile and 

 fertile shoots; the cones are quadrivalvate. It occurs in the Middle 

 Cretaceous of Staten Island though without any cones : Hollick and 

 Jeffrey 1 regard the shoots referred by them to Widdringlonia 

 Reichii as Araucarian on the ground that the bordered pits on the 

 tracheal walls are usually contiguous. There is, however, no sub- 

 stantial reason for assigning these vegetative organs to the Arau- 

 carineae though the structure of the wood shows an Araucarian 

 tendency. Berry^ records the species from the Cenomanian Raritan 

 formation of New Jersey and he expresses the opinion that the 

 species is closely allied to some Potomac specimens described by 

 Fontaine* as Taxodium ramosum, but in the absence of cones a 

 definite determination of affinity is hardly possible. 



Callitrites subtilis (Heer). 



Foimded by Heer*. on slender twigs bearing spirally disposed, 

 appressed, leaves from the Cretaceous beds of Atanekerdluk in 

 .Greenland and described by Newberry^ from the Amboy clays. 

 Holhck* and Berry' have also recorded the species from Cretaceous 

 strata in different parts of the Eastern United States and the latter 

 author figures examples from Upper Cretaceous beds in South 

 Carolina^. 'The epidermal cells are regularly rectangular and the 

 stomata are surrounded by 5 — 6 accessory cells. Berry figures 

 conical cones, 7 — 9 mm. long by 4 — 5 mm. in diameter, composed of 

 four thick scales differing somewhat in shape from the cones of 

 recent species. The sterile shoots of this species bear a close resem- 

 blance to C. Reichii and the two species have often been confused; 

 also to Cyparissidium minimum as figured by Velenovsky^, 

 Juniperus mxtcilenta Heer^" and Widdringlonites fascicularis Holl.^^ 



1 HoUiok and Jeffrey (09) B. p. 29, Pis. v., vin., xx.; Hollick (06) p. 44, PI. iv. 

 figs. 6—8. 



2 Berry (11') p. 87, PI. viii. 



3 Fontaine (89) B. p. 251, Pis. oxxiii., cxxiv., etc.; Berry (11') p. 302. 

 * Heer (74) B. PI. xxvin. fig. 1. 



5 Newberry and Hollick (95) p. 57, PI. x. figs. 2—4. 

 1= Hollick (06) p. 45, PI. IV. figs. 2—5. ' Berry (12^). 



« Ibid. (14) p. 25, PI. XI. figs. 14^17. 

 ' Velenovsky (85) B. PI. ix. figs. 6, 7; PI. x. fig. 4. 

 i» Heer (75) ii. PI. xxviii. fig. Ic. 

 " HoUick (06) PI. IV. fig. 1. 



22—2 



