viii LIST OF ILLUSTRATIONS. 



PAGE 



ALLMAN BAY ....... 163 



LEFFERTS GLACIER . . . . . . 173 



SMOOTH-TOPPED GLACIER IN BARDEN BAY . . . 179 



CYCLOPTERUS SPINOSUS . . . . . . 219 



RADULA OF BUCCINUM SERICATUM ..... 225 



TRICHOTROPIS TENUIS . . . . . . 226 



ABNORMAL DEVELOPMENT OF THE DENTAL ARMATURE IN O. SARSII 274 

 PTYCHOGASTRIA POLARIS : 



1. LATERAL VIEW (magnified) . . . . . 290 



2. EQUATORIAL PROJECTION (magnified) . . . 291 



3. NATURAL SIZE . . . . . . 291 



MAP. 

 OUTWARD AND RETURN TRACKS . . . To face page 1 



