67 American East Coast Arcas 67 



Conrad, Dead Sea Expedition, p. 215, 1852. The preceding species is not Area angulata 

 King, Zool. Journ,, vol. 5, p. 336, 1S31. 



Weller, (Geol. Sun'. N. Jersey), has referred the following New Jersey Cretaceous 

 species to Area: — 



Cibota obesa Whitfield, U. S. Geol. Surv., Monog., vol. 9, p. 93, pi. 11, figs. 30, 31, 

 18S5; not Area obesa Sowerby, Zool. Soc. , Proc, pt. i, p. 21, 1833; Reeve, Conch. 

 Icon., Area no. 3, 1843. 



Area uniopsis Conrad, Acad. Nat. Sci., Phila., Journ., 2d. ser., vol. 2, p. 275, pi. 24, 

 fig. 17, i853=C/(5i;/(j uniopsis Whitfield, U. S. Geol. Surv., Monog., vol. 9, p. 92, pi. 11, 



figs. 32. 33. 1885- 



Area rostellata Morton, Synop. Org. Rem. Cret. Gr. U. S., p. 64, pi. 3, fig. 11, 

 \%2>\=Cibota rostellata Gabb. 



Area qiiindecetnradiata Gabb, Acad. Nat. Sci. Phila., Proc. for i860, p. 95, pi. 2, 

 fig. 2. Weller places in synonymy with this species Cibota multiradiata Gabb, 1. c, p. 

 95, pi. 2, fig. i; Area altirostris Qs^h, Acad. Nat. Sci. Phila., Proc. for 1861, p. 325; 

 Cucullaea transversa Gabb, 1. c, p. 326, and Cueullaea gabbi Johnson, Acad. Nat. Sci. 

 Phila., Proc. for 1905, p, 8. 



Nemoarea cretaeea Conrad, from the Cretaceous of New Jersey, likewise Area 

 Saffordii Gabb, from the Cretaceous of New Jersey, have sometimes been classed 

 as Areas. Weller places them in Nemoarea and Breviarea respectively. The former is 

 not Area erctacea d'Orbigny. A number of Mesozoic species from the interior states and 

 Texas have been classed as Areas. The Cucullaeas have often been called Areas. Of 

 Eocene species Dall says, "A. gigantea Conrad is probably identical with Cueullaea ono- 

 ehela Rogers. Noetia pulehra Gabb, from the Eocene of Texas, i860, is Trinaeria deeisa. 

 There is an A. pulehra of Sowerby dating from 1824." 



The following species are undescribed, described from incomplete specimens, etc. : — 



Eocene. — In the Report on the Geology of South Carolina, 1848, pp. 156, 161, 210, 

 Tuomey named an undescribed species A. obliqua T. It may have been figured in the 

 unpublished plates mentioned in the preface. The name was used by Portlock in 1843, 

 in the Report on the Geology of the County of Londonderry, for a Paleozoic fossil. It 

 has also been used for a South American fossil, and for recent shells by Reeve and 

 Philippi. 



Eocene. — In the Acad. Nat. Sci. Phila., Proc. for 1S52, p. 194, 1854, Tuomey de- 

 scribed a species from North Carolina as follows: "Arca caxcellata: shell thin, very 

 inequileratal, cancellated by radiating lines and approximating transverse lines; umbones 

 prominent; beaks close; hinge-line slightly curved; posterior margin rounded, com- 

 ])ressed; anterior margin much contracted. 



" Dimen. Length 2.5 in.; br. 3.5 in." 



It was not figured and the name is preoccupied by GmeHn, Syst. Nat., 6, p, 3308, 

 1792. In 1809 Martin used the name Areites eancellatusiox a British fossil which Sowerby 

 in 1824 called Area eaneellata. 



