86 On the Glassijication of Tdeostean Fishes. 



seems to have hajDpened in the Cirrhltiformes, wliy should 

 they not do so by elonc^atiou of the ligament which binds the 

 pelvic bones to the cleithra? In the cases of the Stroma- 

 teidae and Tetragonuridge and of the Gempylidse and Trichi- 

 uridas it is in the more specialized and degenerate forms that 

 the pelvic bones are attached to the cleithra by a rather long 

 ligament. In the Labyrinthici and Berycomorphi it is quite 

 different; in each of these the forms with the pelvic bones 

 remote from the cleithra {Ophiocephalus, Polymixia) are the 

 more generalized, differing from the rest in that the pelvic 

 fins are composed of articulated rays only. 



The suborder Scombroidei inclules the divisions Trichiur!- 

 formes, Scorn briforme.-:, Luvaritormes, and Xiphilformes ; a 

 more detailed account of this group is given in a separate 

 paper. 



Xenopteki. 



I am quite in agreement with Dr. fjrill as to the ordinal 

 distinctness of the Gobiesocidse, a:ui I am unable to appre- 

 ciate their supposed close relationship to the Callioiiyniiila3 ; 

 the latter are not very different from the Parapercidaj and 

 Nototheniida?. 



Plectognathi. 



The bones named parietals in my memoir on this group 

 may include those elements, but should preferably be termed 

 cpiotics. 



Bibliography. 



The following deal with the classification of Teleostean 

 Fishes in general ; the numerous memoirs dealing with 

 the anatomy and classification of particular groups are not 

 included : — 



(i) CoPR. "Observations on tlie Systematic Relations of the Fialies," 



Proc. Amer. Assoc, xx. 1871, p. 317. 

 (i) Gl'Nther. Introduction to the Study of Fishes (1880). 



(3) Cope. " Synopsis of the Families of Vertebrata," Amer. Nat. xxiii. 



1889, p. 274. 



(4) Smith Woodward. Catalogue of Fossil Fishes (1889-1901). 



(5) Gill. "Families and Subfamilies of Fishes," Mem. Ac. Washing- 



ton, vi. 1893, p. 127. 



(6) GooDE and Bean. Oceanic Ichthyology (1896). 



(7) Jordan and Evermann. Fishes of North and Middle America 



(1896-1900). 



(8) Boulenger. Cambridge Natural History, Fishes (1904). 



(9) Jordan. Guide to the Study of Fishes (1905). 



(10) Gregory. "The Orders of Teleostomous Fishes," Ann, Ac. N. 

 York, xvii. 1907, p. 437. 



