540 Systematic Paleontology — Upper Devonian 



Zaphrentis chemungensis n. sp. 

 Plate XLV, Figs. 3-6 



Description. — Corallite simple, conical, curved. Exterior bearing shal- 

 low annular constrictions placed at irregular distances, striated longi- 

 tudinally by septal furrows. Calyx very deep in proportion to length of 

 corallite, occupying much of interior of corallite; its bottom concave, 

 sides spreading, edges thin. Septa aboi;t 60 to 65, alternating in length, 

 the longer reaching center of calyx. Septal fossette deep, situated on 

 convex side, containing a long cardinal septum. 



Length of corallite about 20 mm. ; diameter of calyx 17 mm. 



This species differs from Z. marylandica in (1) smaller size. (2) 

 closer septa, (3) great depth of calyx. This species is known only by 

 casts of its exterior and calyx, so that its generic position is not assured. 

 While it seems hazardous to erect a new species in the genus Zaphrentis 

 upon such material yet the perfect preservation of the casts of the calyx 

 renders it desirable to have some specific name by which the form may be 

 distinguished. 



Occurrence. — Jennings Formation, Chemung Member. ISTational 

 Road on Polish Mountain, 2706, abundant. 



Collection. — Maryland Geological Survey. 



Family CYATHOPHYLLIDAE 

 Genus HELIOPHYLLUM Hall 



Hbliophyllum scrutarium n. sp. 

 Plate XLV, Figs. 7, 8 



Description.- — Corallum small, frequently budding; individual coral- 

 lites rather short, slender, cupshaped; surface highly rugose, irregular. 

 Calyx moderately deep, bearing numerous septa, those of all orders 

 bearing the lateral carinations and the denticulate edges which char- 

 acterize the genus HeUophylliim. 



Several specimens of this coral occur as casts in the same decomposed 

 sandstone as that bearing the Favosites described next following. Our 



