Errata.

• Page

• 65, lines 17 and 32, for Acanthodrilis read Acanthodrilus.

• 94, line 22, for Falces read Eyes.

• 101, line 27, for cocolorous read concolorous.

• 113, line 31, for lateral read central.

• 162, line 29, for Debranchiata read Dibranchiata.

• 162, line 38, for perouii read peroni.

• 166, line 9, for terrebelloides read terebelloides.

• 168, line 34, for Italiotidæ read Haliotidæ.

• 170, line 6, for mangei read maugei.

• 171, line 22, for Onchadella read Onchidella.

• 172, line 24, for Aphysiidæ read Aplysiidæ.

• 172, line 29, for novo-zealandica read novæ-zealandiæ.

• 174, line 28, for lumbata read lambata.

• 196, last line, for cathymetrical read bathymetrical.

• 197, line 31, for quinqualoculine read quinqueloculine.

• 198, line 4, et seq., for W. and T. read W. and Y.