284 PROCEEDINGS OF THE NATIONAL MUSEUM. 
Cyrena cardifornis Sowerby=C. cordiformis Recluz. 
Cyrena peruviana Deshayes=C. anomala Deshayes. 
Cytherea, see Macrocallista and Pitaria. 
Cytherea afjinis Broderip=Pitaria concinna Sowerby. 
Cytherea aurantia Hanley=C. aurantiaca Sowerby. 
Cytherea brevispinosa Sowerby =C. multispinosa Sowerby, var. 
Cytherea chionea Menke= Macrocallista squalida Sowerby. 
Cytherea corbicula Menke, not Lamarck= Tivela byronensis. 
Oytrerea dionxa Gray = Pitaria lupanaria Lesson. 
Cy herea gigantea Sowerby, not Gmelin=Dosinia ponderosa Gray. 
Cytherea lutea Philippi= Macrocallista pannosa Sowerby. 
Cytherea mactroides Lamarck, not Born= Tivela planulata. 
Cytherea obliquala Roemer= Pitaria pollicaris Carpenter. 
Cytherea pacifica Troschel= Dosinia dunkeri Philippi. 
Cytherea pallida Broderip= Pitaria multispinosa Sowerby. 
Cytherea ne Philippi= Twela byronensis Gray. 
Cytherea semilamellosa Gaudichaud = Pitaria lupanaria Lesson. 
Cytherea stultorum Menke, not Mawe=Tivela byronensis Gray. 
Cytherea subsuicata Menke= Anomalocardia subrugosa Sowerby. 
Cytherea suppositriz Menke= Pitaria concinna Broderip. 
Cytherea tortuosa Broderip= Pitaria concinna, var. 
Cytherea undulata Sowerby = Tivela planulata Broderip and Sowerby. 
Delphinula, see Liotia. 
Dione brevispina Deshayes= Pitaria multispinosa Sowerby. 
Dione exspinata Reeve=Pitaria lupinaria Lesson. 
Dione prora Reeve, not Conrad= Pitaria pollicaris Carpenter. 
Diplodonta tellinoides Reeve= Phacoides tellinoides Reeve. 
Diplodontina, see Kellia. 
Discina, see Discinisca. 
Dolium latilabre Valenciennes= Malea ringens Swainson. 
Donacilla chilensis Orbigny = Mesodesma donacia Lamarck. 
Donax assimilis Hanley =D. aspera Hanley. 
Donax cayennensis (part) Roemer=D. obesula Deshayes. 
Donaz lessoni Deshayes= Tivela planulata Broderip and Sowerby. 
Donax panamensis Phiippi=D. paytensis Orbigny. 
Dosina antiqua Gray =Chione antiqua King. 
Dosinia simplex Hanley, 1845=D. dunkeri Philippi, 1844. 
Drillia duplicata Weinkauff, not Sowerby =Surcula maura. 
Entodesma chilensis Philippi= EH. cuneata Gray. 
Entodesma (saxicola Baird) Carpenter=Agriodesma Dall, 1909, new name. 
Huthria Gray, 1850= Atractodon Charlesworth, 1837. 
Fissurella affinis Gray =F. peruviana Lamarck. 2 
Fissurella atrata Reeve= F. philippiana Reeve. 
Fissureila biradiata Frembly =F. latimarginata Sowerby, var. 
Fissurella chilensis Sowerby =I’. costata Lesson. 
Fissurella chlorotrena Menke= TI’. rugosa Sowerby. 
Fissurella concinna Philippi=F. maxima Sowerby. 
Fissurella cumingii Reeve=Ff. latimarginata var. 
Fissurella elegans ‘‘ Phil.’’ (inedit.?) Peru (Tschudi). 
Fissurella excelsa Reeve= Fissuridea alta Adams. 
Fissurella galericulum Reeve= F. latimarginata Sowerby, var. 
Fissurella grandis Sowerby =f. nigra Lesson. 
Fissurella humilis Menke= F. rugosa Sowerby. 
Fissurella macrotrema Sowerby, ef. F. longifiss Sowerby. 
VOL. 37. 
