186 PROCEEDINGS OF TBE NATIONAL MUSEUM. voL.xxn 



1850. Astrhelia palinata Edwards and Haimb, British Fossil Corals, Introd., p. 20. 



1850. Astrhelia j)almata Edwards and Haime, Ann. des Nat., 3d ser., XIIII, p. 74. 



1851. Astrhelia xoalmata Edwards and Haime, Arch! v. Mns. Hist. Nat. Paris, V, p. 37, 

 1853-1856. Astrhelia 11 almata Bronx, Lethate Geognostica, Pt. 6, p. 307. 



1857. Astrohelia jyalmata Edwards and Haime, Hist. Nat. des Corall., II, p. 111. 

 1864. Astrohelia imlmata Meek, Check-list Invert. Foss. N. Ain. Miocene, p. 1. 

 1895. Astrohelia palmata Ga.ne, Johns Hopkins Univ. Circ, XV, No. 121, p. 9. 



Colony forming a palmate mass with more or less coalescing branches. 

 In specimens which are not water worn the costse are quite distinct at 

 thecalicular edge and bent, passing at times into slight flattened ridges 

 on the surface of the coenenchyma. Oalices slightly unequal and 

 separated by irregular distances from one another, moderately deep, 

 and projecting somewhat above the coenenchyma. Septa in two cycles 

 of about equal size, with a third cycle, generally rudimentary, at times, 

 however, fully developed j narrow, coarsely toothed with granular sides. 

 The septa often unite in the center forming a small somewhat spongy 

 columella. 



This cural is of interest as being the first described from the Neocene 

 of this country. 



Dimensions. — Breadth of calice from 2 to 3 mm. 



Geological horizon. — Miocene, Chesapeake formation. 



Locality. — Shiloh, New Jersey, and common at many localities in 

 Maryland. 



Collections. — U. S. IsTational Museum; Philadelphia Academy of 

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

 kins University. 



Family ASTR^IDJE Edwards and Haime, amended. 



Genus CIRCOPHYLLIA Edwards and Haime. 



Subgenus ANTILLIA Duncan. 



ANTILLIA GUESDESI (Duchassaing and Michelotti) . 



1850. TurMnolia biloha Duchassaing, Anim. Rad. des Antilles, p. 14 (not Michelin). 



1854. (?) CircopkylUa, species 3, Lonsdale, manuscript. 



1861. Montlivaulfia guesdesii Duchassaing and Michelotti, Mem. Acad. Sci. Torino, 



XIX, p. 345, pi. V, fig. 13. 

 1864. Antillia bilohata Duncan, Quart. Jour. Geol. Soc, XX, p. 31, pi. in, fig. 3. 

 1866. Antillia guesdesii Duchassaing and Miphelotti, Mem. Acad. Sci. Torino, 



XXIII, p. 172. 

 1868. Antillia bilohata Duncan, Quart. Jour. Geol. Soc, XXIV, p. 23. 

 1870. Antillia guesdesii Duchassaing, Revue des Zooph. et des Spong. des Antilles, 



p. 29. 

 1875. Antillia bilohata Pourtales, Geol. Mag., new ser., 2d Dec, II. 

 1895. Antillia biloha Gane, Johns Hopkins Univ. Circ, XV, No. 121, p. 9. 



Corallum simple, nearly straight, conical, at times constricted verti- 

 cally so as to appear more or less bilobate, pedicellate. Epitheea well 

 developed and membraniform. Oostte large above, projecting outward 

 2.5 mm. from the calicular margins; edges rounded and marked by 

 tubercles; sides granulated at their upper extremites in radiating rows 

 extending over from the septa. Exotheca frequently present between 



