{53) 



thus far been found wanting. Other Raritan genera which 

 do not appear in the Matavvan formation are Afe^iis^erfniles, 

 Dt'ospyros, Cissites, Ilex, Cinnamomum^ Dalbe7-gia, Bau- 

 htnia, Colutca, Phuiera, Viburnum, Juglans, etc. ; several 

 of these occur in the upper layers of the Raritan, and future 

 search ought to disclose some of them in the Matawan. 

 Cclastrophyllum with abundant remains of ten species in the 

 Raritan (all horizons) has but two species in the Matawan, 

 one of these being new and unrelated to any of the known 

 Raritan species. Widdringtonites is abundant in the Raritan 

 as are also Salix inaequalis ^.nd Hedera friDiordialis ; Myr- 

 sine borealis Ileer is one of the commonest leaves at all locali- 

 ties in the Raritan, as Sequoia hetero^hylla Vel. is one of its 

 commonest conifers. Celastrus arctica is abundant at South 

 Amboy, and should extend up into the Matawan. Numerous 

 specimens of Ophioglosswn granulatiun are also found in the 

 Raritan according to Newberry (localities not given). The 

 genus Aralia, so abundantly represented in the Raritan, con- 

 tinued to develop during Matawan time. We record six 

 species, the large-leaved Aralia Ravniana emphasizing the 

 similarity of these Atlantic coastal Cretaceous floras with those 

 of Greenland. It is of course quite possible, indeed it seems 

 probable, that these numerous species of Aralia may for the 

 most part be the variable leaves of a considerably less number 

 of actual species ; especially is this so of the Raritan species. 



This is the extreme northeastern extension of the Matawan, 

 and the only locality where plant remains have been found, 

 although the underlying Raritan continues northeastward as 

 far as Buzzard's Bay and doubtfully on Cape Cod. This 

 northeastern extension has been much modified by forces 

 which acted upon it during the Qiiaternary age and is for 

 the most part entirely covered with drift or totally eroded, 

 and if the Matawan formerly extended so far north and east 

 this has been its fate. Professor Lester F. Ward* proposed 

 the name Island series for the northeastern extension of the 

 Raritan and makes it the uppermost member of the Potomac, 



•Ann. Rep. U. S. Geol. Surv. 15 : 335, 336. 1895. 



