MARYLAND GEOLOGICAL SURVEY -i-il 



Frank Burns, of the U. S. Geological Survey, obtained many hundred 

 specimens and fragments from Plum Point, and the Maryland Geologi- 

 cal Survey possesses a fine collection gathered from many localities. 

 Some specimens (ten altogether) from David Kerr's place, Talbot 

 county, collected by P. T. Tyson, differ somewhat from the Plum Point 

 and Jones Wharf specimens. The calices are usually smaller, 2 to 3.5 

 mm. being a frequent diameter, the septa and dissepiments are thinner, 

 the costse are less developed and the ccenenchymal surface more granulate. 

 However, it does not appear that the two sets of specimens can be specifi- 

 cally differentiated. 



Occurrence. — Choptank Formation. 2 miles south of Governor 

 Eun, Dover Bridge, Flag Pond, Cordova, Jones Wliarf, Turner, David 

 Kerr's in Talbot county. Calvert Formation. Church Hill, Skipton, 

 Southeast Creek, Truman's Wharf, Eeed's, Plum Point, 3 miles west of 

 Centerville. 



Collections.— \^. S. National Museum, Maryland Geological Survey, 

 Johns Hopkins University. 



Family ASTRANGID/E Verrill. 



Genus ASTRANGIA Milne-Edwards and Haime. 



Astrangia lineata (Conrad). 

 Plate CXXIV, Figs. 1-4. 



Lithodendron lineatus Conrad, 1835, Trans. Geol. Soc. Penu., vol. i, pt. 2, p. 340, 



pL xiii, fig. 4. 

 Anthophyllum lineatum Lyell, 1845, Quart. Jour. Geol. Soc. London, vol. i, p. 434. 

 Anthophyllum lineatum Lonsdale, 1845, Quart. Jour. Geol. Soc. London, vol. i, 



p. 495, fig. a. 

 Caryophyllia Lineata Conrad (Manuscript label), 1845, Quart. Jour. Geol. Soc. Lon- 

 don, vol. i, p. 495. 

 Litliodendrum lineatum Conrad, 1846, Amer. Jour. Sci., ser. ii, vol. i, p. 220. 

 Anthophyllum lineatum Bronn, 1848, Hand. Gesch. Nat. Index Pal., pt. i, p. 83. 

 Cladocora ? lineata Meek, 1864, Miocene Check List, Smith. Misc. Coll. (183), p. 1. 

 Astrangia lineata Gane, 189.5, Johns Hopkins Univ. Circ, vol. xv, No. 121, p. 9. 

 Astrangia lineata Gane, 1900, Proc. U. S. Nat. Museum, voL xxii, p. 187. 



Description.— The following description is modified from that given 

 by Gane (op. sup. cit.) : 



Colony encrusting, consisting of conical or cylindrical corallites, the 

 largest sometimes rising a centimeter above the surface of the basal ex- 



