MUSEUM OF COMPARATIVE ZOOLOGY. 25 



Order LYOPOMATA Owen. 



Syn. = Lyopomata Owen, Enc. Brit., Ed. VIII, XV, Article Mollusca, p. 339, 



1858. 

 = Drachiopodes, valves libres Deshayes, Lamk., An. s. Vert., 2' 1 " Ed., VII, 



p. 309, 1836. 

 = PaUiobranchiata, testa acardis Van der Hceven, Handb. der Zool., p. 692, 



1850. 

 = Pleuropygia Bronn, Klass. Ordn. Thicrr., Ill, 1 Abth., p. 301, 1862. 

 = Inarticulata Huxley, Lcct. Class., 1864. Intr. Class. Anim., p. 116, 



1869. 

 x Pedimculata + Sessilia Latreille, Fam. Nat. Reg. Anim., p. 204, 



1825. 

 -=: Brachiopodes brachide's D'Orbigny, Cours. Ele'm. Pal.,. II, p. 82, 1849. 

 -= Sarcicobrachia Gray, Ann. Mag. Nat. Hist. 2d Ser. II, p. 438, 1848. 



Characters. Arms free, unsupported by shelly apophyses. Intestine 

 opening by a lateral anus. Lobes of the mantle disunited all around their 

 borders. Brachia without a distinct median lobe. Shell, in most cases, 

 without hinge teeth, articulation, or cardinal process. 



Family CRANILD.E. 



Syn. = Craniidce H. and A. Adams, Gen. Rec. Moll., II, p. 583, 1858. — Jef- 

 freys, Brit. Conch., II, p. 24, 1863. 



= Cranidce Owen, Anat. Inv. Index, p. 683, 1855. — D'Orbigny, Cours 

 Ele'm. Pal., II, p. 90, 1849. 



= Cranidees D'Orbigny, Pal. Fran. Ter. Cre't., IV, 1844* Comptes 

 Rendus, XXV, p. 269, 1847. An. Sci. Nat. c. xiii, p. 350, 1850* 

 (fide Gray, B. M. Cat). 



= Craniadce Gray, Syn. Brit. Mus., p. 155, 1840* — Ibid.,1. c, p. 88, 1842. 

 P. Z. S., p. 202, 1847. Ann. Nat. Hist., 2d Ser., II, p. 438, 1848. — 

 Davidson, Int. Class. Brach., p. 51, 1851. — Woodward, Man. Rec. 

 and Foss. Shells, p. 235, 1854. — Owen, Anat. Inv., p. 503,1855.— 

 Clark, Brit. Test. Moll., p. 37, 1855. — Gosse, Mar. Zool., II, p. 80, 

 1856. — Davidson, Mem. Lin. Soc. Norm., X, p. 84, 1856. — Suess, 

 Wohns. der Brach., p. 38 (220), 1859. — Mrs. Gray's Moll., IV, p. 

 202, 1859. — Carpenter, Lect. Moll. Smithsonian Rep., p. 276, 1860. 

 — Chenu, Man. de Conchyl., II, p. 230, 1862. —Bronn, Klass. Ordn. 

 Thierr., Ill, 1 Abth., p. 301, 1862. 



= Craniade'es Davidson, Mem. Soc. Lin. Norm., X, p. 226, 1856. 



~=cLes Cranies Ferussac, Tabl. Syst, folio 38, 1819. — Rang, Man. Moll., 

 p. 262, 1829. — Deshayes, Enc. Me'th., II, Table, 1830. Hist. An. 

 s. Vert., 2 de Ed., VII, p. 309, 1836. 



-=: Cranio Hkrrmannsen, Ind. Gen. Mai., I, p. 315, 1846 (as of Fer. Rang, 

 and Desii). 



