PROSOBRANCHIATA. 
Moll 91 
Heteropoma tonkingense, Tonkin; Moellendorff, Nachrbl. Deutsch. 
malak. Ges. 1901, p. 119: n. sp. 
Hijabia is a synonym of Aferulus ; Ancey, J. Conchyl. xlix, p. 145. 
Lagochilus hypselospirum, Tonkin ; Moellendorff, Nachrbl. Deutsch. 
malak. Ges. 1901, p. 79: L. insulare , p. 116, diploloma , p. 117, Tonkin; 
Moellendorff, t. c. : n. spp. 
Megalomastoma croceum , Gmel., figd. with n. var.; Dall & Simpson, Bull. 
U. S. Fish Comm. 1900, i, p. 434. 
Murdochia , n. sect, of Lagochilus for the new Zealand species ; Ancey, 
J. Conchyl. xlix, p. 24 [is a synonym of Cytora , Kob. & Mlldff.; 
Moellendorff, Nachrbl. Deutsch. malak. Ges. 1901, p. 127 : Sykes, 
J. Malac. viii, p. 109]. 
Neocyclotus is a synonym of Aperostoma ; Sykes, J. Malac. viii, p. 108. 
Neocyclotus colombiensis, caucaensis , Colombia; Da Costa, P. Malac. Soc. 
London iv, p. 240, figg. : n. spp. 
Omphalotropis japonicus, Japan ; Pilsbry, P. Ac. Philad. 1901, p. 405 : 
n. sp. 
Opisthostoma continuum, p. 242, simplex , N. Borneo, smithi , p. 243, Ban- 
guey I.; Fulton, Ann. Nat. Hist, viii : n. spp. 
Platyrhaphe leucacme , Tonkin ; Moellendorff, Nachrbl. Deutsch. malak. 
Ges. 1901, p. 80: n. sp. 
Pseudopomatias fulvus, Tonkin ; Moellendorff, t. c. p. 81: n. sp. 
Pupina (Tylotechus) solidida, Annam ; Moellendorff, t. c. p. 81 : n. sp. 
Pupinella fruhstorferi may equal P. rufa ; Pilsbry, Ann. Nat. Hist, viii, 
p. 6 : P. rufa, n. var.; Pilsbry, P. Ac. Philad. 1901, p. 497. 
Pupinella oshimee, Japan ; Pilsbry, t. c. p. 349 : P. funatoi, Loo Choo Is.; 
Pilsbry, t. c. p. 497 : n. spp. 
Rhytidopoma, n. n. for Ctenopoma, Pfr. nec Peters ; Sykes, J. Malac. viii, 
p. 60. 
Spiropoma nakadai, Loo Choo Is.; Pilsbry, P. Ac. Philad. 1901, p. 496 : 
n. sp. 
Truncatellid^e. 
Cecina manchurica, Ad., figd.; Sykes, J. Malac. viii, p. 60. 
Tomichia ventricosa, Sby., is the proper name for Hydrobia caledonensis, 
Chaper ; Ancey, J. Conchyl. xlix, p. 225. 
Truncatella caribceends, Sby., figd.; Dall & Simpson, Bull. U. S. Fish 
Comm. 1900, i, p. 436. 
Truncatella hiusuensis, Japan ; Pilsbry, P. Ac. Philad. 1901, p. 615 : 
n. sp. 
Capulhle, Adeorbiid^e, and Naticid,e. 
Adeorbis placens, Gulf of Oman ; Melvill & Standen, P. Zool. Soc. 
London 1901, ii, p. 373, fig.: n. sp. 
Calyptrcea edgariana, Melv., figd.; Melvill, Ann. Nat. Hist, vii, p. 556. 
Capulus hungaricus, nervous system ; Lacaze-Duthiers (311). 
Crepidula , the individuality of the germ nuclei during the cleavage of the 
egg; Conklin (120). 
Natica subcostata, Ten.-Woods, figd.; Hedley, Rec. Austral. Mus. iv, 
p. 22. 
Natica rodatzi, Red Sea ; Schepman, Notes Leyden Mus. xxii, p. 188, fig.: 
N. ( Eunatica) tranquilla, Gulf of Oman ; Melvill & Standen, 
P. Zool. Soc. London 1901, ii, p. 359, fig.: N. ( Eunatica ) tela-aranece , 
Aden ; Melvill, Ann. Nat. Hist, vii, p. 552, fig. : n. spp. 
Polinices nubila, Dall, figd.; Dall & Simpson, Bull. U. S. Fish Comm. 
