EULAMELLIBRANCHIATA, PSEUDOLAMELLIBRANCHIATA. Moll 75 
p. 259, fig. : U. bohmi , gerrardi, Tanganyika, emini , p. 224, Victoria 
Nyanza, ambifarius, p. 225, Dar-es-Salaam, liederi , p. 226, hypsi- 
prymnus, p. 230, Nyassa, stuhlmanni , p. 232, ngesianus , p. 234, Lake 
Albert-Edward, multicolor , p. 236, Victoria Nyanza, rostralis, p. 239, 
Tanganyika; Martens (282), figg. : U. walkeri , Florida; Wright, 
Nautilus, xi, ]p. 91 : U. valens, Savoy, p. 122, multizonatus , Denmark, 
p. 123, nitidovirens, Livonia, p. 130, redactus, Denmark, p. 131 ; Drouet, 
J. Conchy 1. xlv: U. haaeni , palembangensis, Sumatra; Strubell, 
Nachrbl. Deutsch. malak. Ges. 1897, p. 10: U. schrencki, p. 131, 
abbreviatus, p. 132, Siberia; Westerlund, Ann. Mus. St. Petersb. 
1897: U. verbecJci (Bttg. MS), Sumatra; Martens (281), p. 89, fig.: 
U. pinkstonii, Alabama, kirklandianus, p. 136, burtchianus , p. 137, 
lehmanii , p. 138, Florida, brimleyi , p. 139, North Carolina; Wright, 
Nautilus, x: U. swordianus , Virginia, p. 4, diazensis , Florida, p. 5; 
Wright, Nautilus, xi : n. spp. 
PSEUDOLAMELLIBRANCHIATA. 
Amussiopecten , n. subgen., of Pectinidce ; Sacco (403), pt. xxiv, p. 63. 
Amussium sublucidum , p. 193, hypomeces , p. 195, Azores; Dautzenberg & 
Fischer, Mem. Soc. zool. France, x, figg. and (116) pp. 23 & 24 : 
n. spp. 
+ Byssonychia, n. g., typo Ambonychia radiata , Hall; Ulrich, Geol. Surv. 
Minnesota, iii, pt. 2, p. 498. 
Chlamys benedicti, Verrill and Bush, West Indies, p. 74*, costellata , V. and B., 
Newfoundland, p. 76; Verrill, Tr. Connect. Ac. x: C. alicei, p. 188, 
chaperi, p. 190, Azores; Dautzenberg & Fischer, Mem. Soc. zool. 
France, x, figg. and (116) pp. 22 & 23 : n. spp. 
t Cobracephalus, n. g., for O. angulosus , n. sp. ; Whidborne, Devon. Fauna 
S. England, iii, pt. 2, p. 118. 
Crassostrea , n. subgen. of Ostrca , for 0. virginiana , Gmel. ; Sacco (403), 
pt. xxiii, p. 15. 
Cubitostrea , n. subgen. of Ostrea, for 0. cubitus , Desh. ; Sacco (403), 
pt. xxiii, p. 12. 
Cyclopecten , n. gen. of Pectinidce , type G. pustulosus, Verrill; Verrill, Tr. 
Connect. Ac. x, p. 70. 
Gyclopectm subimbrifer , Verrill and Bush, n. n., for Pecten hoskynsi , Verrill 
non Forbes; Verrill, Tr. Connect. Ac. x, p. 84. 
Cyclopecten nanus , Verrill and Bush, East Coast of U. S., p. 85, simplex , 
West Indies, p. 87 ; Verrill, tom. cit. : n. spp. 
iDidymotiSy n. g., for D. variabilis, n. sp., from tne Aptian of Columbia ; 
Gerhardt, N. Jahrb. Min. Beil. Bd. xi, p. 178, fig. 
Flabellipecten , n. subgen. of Pectinidce ; Sacco (403), pt. xxiv, p. 55. 
Flexopecten, n. subgen. of Pectinidce, for P. flexuosus ; Sacco (403), pt. xxiv, 
p. 38. 
t Gigantostrea, n. subgen. of Ostrea, for 0. gigantea, Sol. ; Sacco (403), 
pt. xxiii, p. 14. 
t Gryphcea incurva, notes on ; French (148). 
Hyalopccten, n. gen. of Pectinidce, type H. undatus, Verrill; Verrill, Tr. 
Connect. Ac. x, p. 71. 
Hyalopccten dilectus, Verrill and Bush, off Martha’s Vineyard; Verrill, 
Tr. Connect. Ac. x, p. 80 : n. sp. 
Isomonia, n. subg. of Monia, typo I. alberti; Dautzenberg & Fischer, 
Mem. Soc. zool. Franco, x, p. 184. 
Lcptopecten, n. subgen. of Chlamys, type C. monotimeris, Conrad; Verrill, 
Tr. Connect. Ac. x, p. 69. 
