;.11 



THE ANNALS 



MAGAZINE OF NATURAL HISTORY. 



[EIGHTH SERIES.] 

 No. 51. MARCH 1912. 



XXVITT. — The Classification of the, Teleostean Fishes of the 

 Order Pediculati. By C. Tate Regan, M.A. 



(Published by permission of the Trustees of the British Museum.) 



Order PEDICULATI *. 



AcANTHOPTEROUS pliysoclists witli jugular pelvic fins, each 

 of a spine and 5 or fewer soft rays ; gill-membi-anes broadly 

 united to isthmus. ]\Iouth bordered above mainly by the 

 prpemaxillaries, which are often protractile; maxillaries 

 toothless ; no supramaxillaries ; suborbitals unossified ; 

 hyo-palatine and opercular bones all present, except the 

 mesopterygoid, which is small or absent ; lower pharyngeals 

 separate. Parietals, when present, separated by supra- 

 occipital ; orbitosplienoid, basisplienoid, and opisthotic 

 absent ; first vertebra rigidly attached to skull, the neural 

 arch suturally united to the exoccipitals. Vertebral centra 

 co-ossified with arches ; posterior prsecaudal vertebrae with 

 downwardly directed parapophyses ; hypurals a pair of 

 expanded plates, which may unite to form one only ; ribs 

 absent. Post-temporal short, simple, firmly attached or 



* Gill's recent popular illustrated memoirs on the life-histories of 

 the Angler and of the Toad-tishes (Smithsonian Misc. t'oll. xlvii. 1905, 

 p. 500, and xlviii. 1907, p. 388) and on ' Angler Fishes ; their Kinds and 

 "Ways ' (Smithsonian Itep. f. 1908, p. 565) contain much of interest 

 concerning the Pediculates. 



Ann. & Mag. N. Llist. Ser. 8. Vol. ix. 19 



