156 BULLETIN 90, UNITED STATES NATIONAL MUSEUM. 



Family SAXICAVIDAE. 



/ Genus PANOPE Menard. 



Panope Menard, Mem. Nouveau Genre Coq. Biv.. p. 31, Jan. 1807. Type, 



P. aldnwandi Menard. — Lamarck, Extr. d'un Gom*s, 1812, p. 108. 

 Panopea Menard, Ann. du Mus. Paris, voL 9, p. 131, May, 1807. 

 Panopea Goldfuss, Handb. d. Zool., p. 677, 1820. 

 Olycymeris Lamaeck, Prodrome, p. 83, 1799. Type, Mya glycymeris Born, 



Not Glycymeris Da Costa. 1778, nor of Lamarck, 1801, nor of Scliu- 



macher, 1817. 

 Panopaea Lamarck, Anim. s. Vert, vol. 5, p. 456, 1818. — Valenciennes, 



Arch, du Museum de Paris, voL 1, p. 3, 1838. 

 Panopia Swainson, Malac, p. 367, 1840. 

 Olyeimeris H. and A. Adams, Gen. Rec. Moll., vol. 2, p. 350, 1856. — Gbat, 



Fig. Moll. Anim., vol. 5, p. 30, 1857. 

 Panope Dall, Proc. Mai. Soc, vol. 10, pt. 1, March, 1912, pp. 34-5. 



I showed in 1912 that the first published and valid orthography of 

 this name is Panope and not Panopea as usually printed, the latter 

 form being printed at least three months later than the original sepa- 

 rate issue of Menard's paper. 



PANOPE WHITFIELDI Dall. 



Plate IS, figs. 1, 2. 



Panopea whitfleldi Dall, Trans. Wagner Inst., vol. 3, pt. 4, p. 829, 1898, 



new name for: 

 Panopea yoldfussi Whitfield, Miocene marls of N. J., p. 89, pi. 16, figs. 



9-13, 1895 ; not of Wagner, 1838. 



Oligocene of the Tampa silex beds at Ballast Point, Tampa Bay; 

 of the Chipola River marl, Calhoun County ; and of the Oak Grove 

 sands at Oak Grove, Santa Rosa County, Florida. Also mixed with 

 Miocene species in the rehandled marl of Jericho, Cumberland 

 County, New Jersey. U. S. Nat. Mus. No. 135913. 



This species differs from the typical Miocene Panope goldfussii 

 of Wagner in its smaller size, more equilateral valves, and less 

 expanded anterior region. 



Family GASTROCHAENIDAE. 

 Genus GASTROCHAENA (Spengler) Cuvier. 



Gastrochaena (part) Spengler, Nova acta Soc. Sci. Hafn., vol. 2, p. 174, 



17S3.— Desha YES, Traite de Conchyl., vol. 1, p. 26, 1844. 

 Oastrochaena Cuvieb, R6gne Anim., vol. 2, p. 490, 1817. — liAMARCK, Anim. 



s. Vert., vol. 5, p. 446, ISIS. 

 Bocellaria (Fleuriau Ms.) Blainville, Diet. Sci. Nat., vol. 57, p. 244, 



1828.— Tryon, Mon. Pholadacea, p. 39, 1862. 

 RoxeUaria Menke, Ss'n., p. 121, 1830. 

 Oastrochaena Fischer, Man. de Conchyl., 1887, p. 1128. — Dall, Trans. 



Wagner Inst., vol. 3, pt. 4, p. 823, 1898. Type, G. duMa Donovan 



i=G. modioUna Lamarck). 



