272 CRETACEOUS PAEEONTOEOGY. 



The dimensions of an average example are: width, 7.5 mm. ; 

 height, 2 mm. 



Remarks. — -This little coral has p'reviously been recorded by 

 Meek only from the Fox Hills fauna of the Upper Missouri sec- 

 tion. El New Jersey the species has only been seen in the condi- 

 tion of moulds, the actual substance of the coral having been 

 removed by solution. The impressions of the basal disk usually 

 show very clearly the character of the radiating costas, and it is 

 from such specimens as this that the species is usually recognized, 

 the impressions of the upper surface being much less perfectly 

 preserved. The species is most abundant in the Woodbury clay, 

 it being a rather common species at Eorillard; from the other 

 horizons it has been rarely met with, usually a single example 

 only having been observed. 



Formation and locality. — Merchantville clay-marl, near Mata- 

 wan (loi^); Woodbury clay, Eorillard (102), near Matawan 

 (103), near Haddonfield (183) ; Wenonah sand, near Crawfords 

 Corner (126*). 



Geographic distribution. — New Jersey, South Dakota. 



Family BTJPSAMMIDAE. 



Genus Bai,anophyl.lia Searles Wood. 



Balanophyllia inauris Vaughan. 



Plate v., Figs. 18-22. 



1900. BalamopkyUia inauris Vaughan, Monog. U. S. G. S., voL 



39> P- i7i> Pl- 19, fig's. 12-14. 

 1905. Balanofhyllia inauris Johns., Proc. Acad. Nat. Sci. PhiL 



(1905),?. 4. 



Description. — Corallum cornute, usually curved in the plane of 

 the longer transverse axis of the calice, som,etimes straight, and 

 rarely slightly curved in the plane of the shorter axis of the calice ; 

 the area O'f attachment small. The coBtse fine, low, granulate, 

 usually not acute; subequal in size, or every fourth one slightly 

 larger than the intervening three; the corallum wall perforate- 

 girdling bands or shreds of epitheca are sometimes apparently 

 present. Septa in five complete cycles ; the members of the fifth 



