PISCES 111 



Order IV. Plagiostomi 

 Sub-Order 1. Selachii (12 living and 3 extinct families of sharks 



and dog-fishes). 

 Sub-Order 2. Batoidei (Saw-fishes, skates, rays and torpe- 

 does, 7 families). 

 Order V. Holocephali (Chimaeras, 3 extinct and 1 living family). 

 Sub-Class II. Teleostomi 

 Order I. Crossopterygii 

 Sub-Order 1. Osteolepida (4 extinct families). 

 Sub-Order 2. Cladista (recent genera, Polypterus and Cal- 

 amichthyS). 



Order II. Chondrostei (5 extinct and two living families, includ- 

 ing paddle-fishes and sturgeons.) 



Order III. Holostei (6 extinct and 2 living families, including 



bow-fins and gar-pikes). 



Order IV. Teleostei. 



Sub-Order 1. Malacopterygii (21 families, including tarpons, 

 herrings, salmon, etc.). 



Sub-Order 2. Ostariophysi (6 families, including carp, tench, 

 cat-fishes, etc). 



Sub-Order 3. Symbranchii (2 families). 



Sub-Order 4. Apodes (5 families of eels). 



Sub-Order 5. Haplomi (14 families, including pickerel and killi- 

 fishes, etc.). 



Sub-Order 6. Heteromi (5 families, Fierasfer, etc.). 



Sub-Order 7. Catosteomi (11 families, including stickle-backs, 

 pipe-fishes, sea-horses, etc). 



Sub-Order 8. Percesoces (12 families, including Belone, sand- 

 eels, rag-fishes, etc.). 



Sub-Order 9. Anacanthini (3 families, including cod, etc.). 



Sub-Order 10. Acanthopterygii (78 families, including a large 

 proportion of our commonest fishes — 

 perch, bass, mackerel, flounders, gobies, 

 shark-suckers, etc.). 



Sub-Order 11. Opisihomi (1 family — eel-like fishes). 



Sub-Order 12. Pediculati (5 families, including the Anglers, 

 Bathymal Sea-Devils, etc.). 



