45 



Volume tliird. Gobiidae, Discoboli, Oxudercidae, Batrachidae. Pediculati, Blen- 

 niidae, Acanthoclinidae, Comephoridae, Trachypteridae, Lophotidae, Teutlii- 

 didae, Acronuridae, Hoplognathidae, Malaoanthidae, Nandidse, Polycentridae, 

 Labyrinthici, Lucioceplialidae, Atherinidse, Mugilidae, Ophiocephalidae, Tri- 

 chonotidae, Cepolidae, Gobiesocidae, Psychrolutidae, Centriscidse, Fistulariidae, 



Mastacembelidae, Notacanthi 1861. [General title -f xxv, 586 -f 



x pp.*_10 s . 6J.] 

 v. 4. Catalogue of the Acanthopterygii pharyngognathi and Anacanthini in the 



collection of the British museum, .... 1862. [General title -f xxi, 534 



pp. Ss. 6c?.] 

 v. 5. Catalogue of the Physostomi, containing the families Siluridae, Characi- 



nidae, Haplochitonidae, Sternoptychidse, Scopelidns, Stomiatidae in the collection 



of the British museum, .... 1864. [ (including general title) xxii, 455 



PP-] 



T. 6. Catalogue of the Physostomi, containing the families Salmonidae, Percop- 

 sidae, Galaxidae, Mormyridae, Gymnarchidae, Esocidae, Umbridae, Scombresocidae, 

 Cyprinodontidae in the collection of the British museum, .... 1866. [xv, 

 368 pp.] 



T. 7. Catalogue of the Physostomi, containing the families Heteropygii, Cypri- 

 nidae, Gonorhynchidae, Hyodontidse, Osteoglossidas, Clupeidae, Chirocentridae, 

 Alepocephalidae, Notopteridae, Halosauridae in the collection of the British mu 

 seum, .... 1868. [xx, 512 pp.] 



T. 8. Catalogue of the Physostomi, containing the families Gymnotidae, Sym- 



branchidae, Muraenidse, Pegasidae, and of the [orders] Lophobranchii, Plec- 



tognathi, [and sub-classes] Dipnoi, Gauoidei, Chondropterygii, Cyclostomata, 



Leptocardii, in the British museum, .... 1870. [xxv, 549 pp.] 



&quot;In the present work, 6843 species *re regarded as well established and described; 



whilst 1682 others are doubtful and referred to by name only. Assuming, then, that 



about one-half of the latter will be ultimately admitted into the system, and that, 



since the publication of the volume of this work, about 1000 species have been 



described elsewhere, we may put the total number of fishes known at present as about 



9000.&quot; Gthr. v. 8, p. vi. 



* A &quot;Systematic synopsis of the families of the Acanthopterygian fishes&quot; (x pp.) ia given as an ap 

 pendix to the third volume. 



