SYSTEMATIC INDEX. 



Order III. PLECTOGNATHL 



Fam. I. Diodontidse. 



ORTHAGORISCUS. Mola, Short Sun-fish. 

 Sub-class II. PISCES CHONDROPTERYGII. 

 Sub-order I. ELEUTHEROPOMI. 

 Fam. I. Acipenserida\ 



ACIPENSER. Stuno, Sturgeon. 



Sub-order II. TREMATOFXKI. 

 Sub-section I. SQUALL 

 Fam. I. Sc3'llidsc. 



SCYLLIUM. Cnnicul.i, Little Spotted Dog-fish. 

 Fam. II. Squallda}. 



SQUALUS. Carcliarius, White Shark. 

 SPHYRMAS. Zvgsena, Hammer-headed Shark. 



Sub-section II. RAIL 

 Fam. I. Pristidtc. 



I'RISTIS. Antiquorum, Sawfish. 

 Fam. II. Raidse. 



TORPEDO. Scutata, Torpedo. 



RALV. Glavata, Thornback Skate. 



Sub-order III. CYCLOSTOMI. 

 Fam. I. PetromyzonTdse. 



PETROMYZON. Marinus, Lamprey. 

 LAMPETRA. Fluviatilis, Lampern. 

 MYXINE. Glutinosa, Myxinc. 



Division II. INVERTEBRATA. 

 Class VI. MOLLUSCA. 

 Order CEPHALOPODA. 

 Fam. Octopida;. 



OCTOPUS. Vulgaris, Cuttle-fish, 

 ARGONAUTA. Argo, Nautilus. 



Order GASTEROPODA. 

 Sub-order PULMOBRANCIIIATA. 

 Fam. Limacidae. 



LIMAX. Ater, Black Slug. 



Fam. Helicidaj. 



HELIX. Aspersa,' Snail. 



Fam. Turbinida?. 



SCALAR! A. Pretiosa, Rnjcl Staircase Wentletrap. 



