Suborder II. BALÆNOPTEROIDEA 46 Fam. 2. AGAPHELIDÆ 47 1. Agaphelus 47 gibbosus. N. Atlantic 48 2. Rhachianectes 48 glaucus. California 48 Fam. 3. MEGAPTERIDÆ 50 1. Megaptera 50 longimana. North Sea 50 novæ-zelandiæ. New Zealand 50 Burmeisteri. Buenos Ayres 50 americana. Bermuda 50 kuzira. Japan 50 osphyia. Atlantic 51 versabilis. N. Pacific 51 2. Poescopia 51 Lalandii. Cape of Good Hope 51 3. Eschrichtius 52 robustus. Atlantic 52 Fam. 4. PHYSALIDÆ 52 1. Benedenia 52 Knoxii. North Sea 52 2. Physalus 52 antiquorum. North Sea 53 Duguidii. North Sea 53 patachonicus. River Plata 53 brasiliensis. Bahia 53 3. Cuvierius 54 Sibbaldii. North Sea 54 4. Rudolphius 54 laticeps. North Sea 54 5. Sibbaldius 55 borealis. North Sea 55 Schlegelii. Java 55 antarcticus. Buenos Ayres 55 sulphureus. N. Pacific 55 tectirostris. N. Pacific 56 tuberosus. North-east America 56 Fam. 5. BALÆNOPTERIDÆ 56 1. Balænoptera 56 rostrata. North Sea 56 velifera. Oregon 56 2. Swinhoia 57 chinensis. Formosa 57 Section II. DENTICETE 57 Suborder III. PHYSETEROIDEA 57 Fam. 6. CATODONTIDÆ 58 1. Catodon 58