NO. 1193. SOME NEOCENE CORALS— GANE. 191 



side, together with the occurrence of certain shells that are apparently- 

 identical in the two regions, but found neither in the arctic nor in the 

 tropical regions, is very suggestive of a former connection, perhaps in 

 early tertiary times, between the two oceans, through the temperate 

 parts of North America." 



Dimensions. — Breadth of calice, from 2 to 4 mm. 



Geological liorizon. — Miocene, Chesapeake formation and (Pleiocene *? 

 of Tuomey and Holmes). 



Locality. — Virginia and South Carolina. 



Collections. — IT. S. National Museum; Philadelphia Academy of 

 Natural Sciences; Wagner Free Institute of Science; Johns Hop- 

 kins University. 



Subgenus PHYLLANGIA Edwards and Haime. 



PHYLLANGIA FLORIDANA Gane. 



(Plate XV, figs. 7-9.) 



1895. Phyllangia floridana Gane, Johns Hopkins Univ. Circ, XV, No. 121, p. 9. 



Colony encrusting, consisting of subturbinate corallites arising from 

 the basal expansion. Individuals generally free above but somewhat 

 closely united at their base. Walls thin at the calicular edge, thicker 

 below. Costpe low, subequal, minutely granulated, reaching to the base, 

 but more prominent at the calicular margin and at the swellings just 

 beneath the constrictions in the walls of the corallites. About on a 

 level with the bottom of the fossa, the diameter of the corallite is least, 

 the walls being here somewhat constricted, beneath which constriction 

 they are again frequently swelled to a diameter equal to that at the 

 calicular margin. Calices somewhat exjpanded, widely open, deep, 

 narrow at the bottom. Septa crowded, in six systems of four complete 

 cycles, lacking a few septa of the fifth order; primaries and secondaries 

 more exsert, thicker and broader than the septa of the following cycles, 

 quarternaries least exsert, thinnest and narrowest; sides of the septa 

 sharply granulated and the edges of all but the foarth cycle rounded 

 superiorly and subentire in their upper parts, the lower two- thirds of 

 the septal edges being strongly lobate or dentate, the uppermost tooth 

 being the most prominent and similar in shape to a true paliform lobe. 

 Columella papillary occupying a very limited area; the line of separa- 

 tion between the papillse of the columella and the lowest teeth of the 

 septa being indistinguishable. Gemmation by budding from the basal 

 expansion of the wall of a parent corallite. 



This form in its general size and mode of growth very much resem- 

 bles the Astranqia lineata (Conrad) of the Virginia Miocene deposits. 



Dimensions. — Breadth of calice, from 4 to 6 mm. 



Geological liorizon. — Pliocene, Caloosahatchie beds. 



Locality. — Alligator Creek, Monroe County, Florida. 



Collections. — U. S. National Mnspnm. The type specimen was col- 

 lected by Mr. Joseph VVillcox, of Philadelphia. 



