330 SYSTEMATIC PALEONTOLOGY 



Occurrence. BEEKMANTOWN LIMESTONE (Stonehenge member). 

 One-half mile south of Funkstown, and near Hagerstown. 

 Collection. U. S. National Museum. 



CYRTOCERAS BEEKMANENSE Whittle] d 

 Plate XXXII, Figs. 1, 2 



Cyrtoceras beekmanensis Whitfield, 1889, Bull. Amer. Mus. Nat. Hist., vol. ii, 

 p. 57, pi. x, figs. 2, 3. 



Description. Shell as usually observed, from 75 to 100 mm. in length 

 and less than 25 mm. wide, little curved, the amount of curvature not 

 amounting to more than 3 mm. in a length of 75 mm.; laterally com- 

 pressed so that the lateral diameter is somewhat less than the dorso- 

 ventral; slightly oval in cross-section. Septa numerous, 14 chambers 

 occurring in 25 mm., little curved and of shallow depth. Outer chamber 

 of shell long. Siphon unknown. Surface of shell apparently smooth. 



Occurrence. BEEKMANTOWN LIMESTONE (Stonehenge member). 

 National Highway, one-half mile south of Funkstown, Maryland. 



Collection. U. S. National Museum. 



CYRTOCERAS CAMURUM Hall 

 Plate XLVIII, Fig. 21 



Crytoceras camurum Hall, 1847, Pal. New York, vol. i, p. 196, pi. xlii, fig. 6. 

 Cyrtoceras camurum Clarke, 1897, Geol. Minnesota, 3, pt. 2, p. 805, pi. Ix, 

 figs. 5, 6. 



Description. Fragments of a curved cephalopod occurring in the 

 strata just above the typical Christiania bed in the vicinity of Green- 

 castle, Pennsylvania, are so similar to the New York lower Trenton 

 species described as Cyrtoceras camurum by Hall that they are believed 

 to be the same. In neither area have complete specimens been found, so 

 that it is still impossible to give a full description of the species. 



Occurrence. CHAMBERSBURG LIMESTONE (Greencastle bed). Green- 

 castle, Pennsylvania. The type locality is the Trenton limestone at 

 Middleville, New York, but this species has also been identified in the 

 Black Eiver rocks of Wisconsin. 



Collection. U. S. National Museum. 



