TRANSACTIONS OF WAGNER 

 658 



^ TERTIARY FAUNA OF FLORIDA 



kept apart. In all the pairs of A. siaminca in the collection the right valve 

 is distinctly smaller than and fits into the other, while in A. clisea the margins 

 meet evenly. 



It now remains to enumerate the other Tertiary species of Area not 

 hitherto mentioned, but which have been referred to American beds by 

 various authors. 



Nomina nuda. A. diplcura Conrad, Bull. Nat. Inst., 1842, mentioned by 

 name as from the Miocene of Maryland, appears never to have been described. 

 A. graimlifera Conrad appears by name only in the list of species furnished 

 by Conrad for the appendix to Morton's Synopsis. 



Unidentifiable. A. canecllata Tuomey, briefly described and unfigured, 

 from the Eocene of North Carohna, in 1854, is not A. cancellata Gmelin, 1792, 

 or Phillips, 1829, and should be expunged from our lists. A. niaxillata 

 Conrad was based on an unrecognizable internal cast from the Miocene of 

 Maryland, and, though briefly described in 1830, has never been figured. 



Eocene. Area (^Fossidarea ?) inornata Meyer, 1886, from Claiborne, 

 Alabama, is very minute and has not been seen by me. A. gigantea Conrad 

 is probably identical with Ciicnllcea onochela Rogers. Noelia ptdehra Gabb, 

 from the Eocene of Texas, i860, is Trinacria decisa. There is an A. pulchra 

 of Sowerby, dating from 1824. 



Oligoeene. A. oronlensis Gabb, 1875, is abundant in the black shales of 

 Gatun on the Panama Isthmus. The following species described or men- 

 tioned by Gabb from the Oligoeene of St. Domingo have not been figured : 

 A. midtiliueata Gabb, A. patricia Sowerby, A. pemielli Gabb. Area trinitaria 

 Guppy, 1866, from the Manzanilla beds of Trinidad, appears to be a good 

 species of the subgenus Noelia. 



Miocene. "Anontaloeardia" triginiinaria Conrad, 1862, from the Miocene 

 of South Carolina, seems to be an Anadara from the brief description, but has 

 never been figured. 



The following nominal species from the Pacific coast have been so 

 wretchedly figured and described that further study is necessary to identify or 

 discriminate them; they are supposed to be from the Miocene: Area trilineala 

 Conrad, A. canalis and devineta Conrad, all of which by Gabb are united 

 specifically with A. microdonia Conrad, the most common of the Pacific 

 Miocene species ; A. congesta Conrad, and A. obispoana Conrad. 



