850 SYSTEMATIC PALEONTOLOGY 



below, furnished above with a few irregularly-spaced and very small spine- 

 like teeth. Petiole extremely stout, 3 cm. long in one of the smaller 

 specimens. Midrib also stout, thinning rapidly toward the tip. Secon- 

 daries five or six pairs, alternate, camptodrome, branching from the mid- 

 rib at an angle of about 50 to 55 and curving slightly upward to join 

 lateral branches from the secondaries next above. From the outer side 

 of these successive arches short tertiaries run to the marginal teeth in 

 those parts of the leaf in which the teeth are developed. 



This very handsome and well-marked species is represented by a num- 

 ber of specimens from Grove Point. It finds its nearest relative in certain 

 of the larger and more orbicular variants of the upper Raritan and 

 Magothy species Celastrophyllum newberryanum Hollick; in fact, it 

 would seem reasonable to suppose that the present species which has thus 

 far been found at the extreme top of the Magothy formation at Grove 

 Point may be descended from Celastropliyllum newberryanum, which 

 characterizes particularly the upper Earitan at South Amboy, New Jersey. 

 The writer was long undecided whether or not to refer the new species to 

 Cclaslrophyllum or Elceodendron, and it may also seem preferable eventu- 

 ally to transfer C. newberryanum to the latter genus, with which it shows 

 many characters in common. The present species may be compared with 

 Elceodendron dioicum Grisebach from the West Indies. 



The genus Elceodendron has mainly a Tertiary history, although 

 Hollick has described a Magothy species recently from Gay Head, 

 Marthas Vineyard (Elceodendron strictum). 



Occurrence. MAGOTHY FOKMATION. Grove Point, Cecil County. 



Collection. U. S. National Museum. 



Genus CELASTRUS Linne 

 [Sp. PI., 1753, p. 196] 



CELASTKUS AECTICA Heer 

 Plate LXXVII, Fig. 7 



Celastrus arctica Heer, 1883, Fl. Foss. Arct., Bd. vii, p. 40, pi. Ixi, figs. 5d, 



5e. 

 Celastrus arctica Newberry, 1896, Mon. U. S. Geol. Survey, vol. xxvi, p. 98, 



pi. xiii, figs. 8-18. 



