758 SYSTEMATIC PALEONTOLOGY 



This species was based upon a leaf-spot fungus found in abundance on 

 the under side of leaf fragments (sp. indet.) in the matted layers of fossil 

 leaves from the upper Raritan at the Hylton pits in Xew Jersey. Identical 

 remains are not uncommon in the Magothy formation of Maryland. Their 

 characteristic appearance is indicated on the photographic reproduction 

 of a leaf of Eucalyptus geinitzi (Heer) Heer. 



These remains are conclusively congeneric with the forms usually 

 referred to this genus and very similar to Splicerites problematicus 

 (Knowlton) Knowlton from the Dakota group of Kansas. The latter is, 

 however, more irregular in outline, larger in size, and infests Sterculia 

 which is not the host of the present species. While remains of this sort 

 are of little botanical interest to some, they nevertheless have a consider- 

 able biological significance in the evidence which they afford of the exist- 

 ence during the mid-Cretaceous of fungi of this order. 



Occurrence. MAGOTHY FOKMATIOX. Sullivan's Cove, Anne Arundel 

 County. 



Collection. Maryland Geological Survey. 



CLASS ALGAE 



Genus ALGITES Seward 

 [Wealden Flora, Part I, 1894, p. 4] 



A generic term proposed by Seward for those fossil remains which arc in 

 all probability those of Algse, but which from their nature cannot be 

 decisively compared with any one genus of known botanical affinity. 



Fossil algae are common fossils at some geological horizons, but they 

 are usually indecisive in their characters, especially when preserved as 

 impressions, so that comparisons with modern genera altogether lack 

 certainty. As has been pointed out by Seward (loc. cit.) for the type of 

 this genus, Algites valdensis of the English Wealden, these forms suggest 

 various modern genera such as Chondrus, Zonaria, Dictyota, etc. 



ALGITES AMERICANA Berry 



Plate L, Fig. 1 

 Algites americana Berry, 1911, Bull. Torrey Bot. Club, vol. xxxviii, p. 401. 



Description. Thallus as preserved, in the form of dichtomously divided 

 branches ranging in width from 2 mm. to 5 mm., thin and undulating 



