252 MR C. TATE RHIGAN ON THE 



have the palate toothless and the gill-membranes united, or joined to the isthmus. 

 The snout is not produced, the mouth is protractile, the lateral line is complete and 

 continuous, and a spinous dorsal fin is present. The skeleton is well ossified ; there are 

 2 radials on the hypocoracoid and 1 on the hypercoracoid (fig. 3, 1); the palatine and 

 pterygoids are normally developed. The vertebne number 38 to 42 (13-16 + 22-29) ; 

 prsecaudals with parapophyses from the fifth or sixth ; ribs and epipleurals on parapo- 

 physes, when these are developed. 



Littoral fishes, with one species in fresh water. 



Three genera. 



1. /'se7ida])Jirifis, CafiUAn., 1872. 

 Proc. Zool. Sue. Virforia, i. p. 72 ; Ogill)y, I'roc. Linn. Soc. i\'.S. W'alex, xxii., 1897, p. 55'J. 



Body subcylindrical, fully scaled. Head small, scaly, somewhat depressed, narrowed 

 forward ; interorbital region fiat. Teeth in bands in jaws and on vomer and palatines ; 

 lower jaw projecting. Operculum normal, with a weak spine ; gill-membranes not 

 united, free from isthmus. (.)rigin of spinous dorsal at some distance behind head ; rays 

 of all the fins branched. 



S.E. Austi-alia and Tasmania ; fresh-water. 



Pseudajih ritis urvillii. 



Aphrilis urrillii, Cuv. iiml Val., Hist. Nat. Poks., viii. p. 484, pi. 243 (1831): Giiiith., Cat. 



Fish., ii. p. 242 (1860). 

 Pseud aphr it i-< bassii, Ca.steln., I.e. 



Depth of body 5 to G in the length, length of head 3lf to 4. Diameter of eye 

 51 to 7* in the length of head, interorbital width 8 to 12. Maxillary extending to 

 below eye ; about 10 short gill-rakers on lower part of anterior arch. Dorsal VII-VIII, 

 19-20. Anal 23-25. 60 to 65 scales in the lateral line. Body marbled ; dorsal and 

 caudal spotted. 



Rivers from New South Wales to South Australia and Tasmania. 



Here described from eight specimens, 100 to 240 mm. in total length, from South 

 Australia, Victoria, and Tasmania. 



2. Cottoperca, Steind., 1876. 



Sitzungsb. Alaul. Wien, Ixxii. p. GC. 



Head and body compressed, fully scaled. Head large ; snout broad ; interori)ital 

 region concave. Teeth in l)ands in jaws and on vomer and palatines ; lower jaw some- 

 what the shorter. Operculum normal, with a weak spine ; gill-membranes not united, 

 free from isthmus. Spinous dorsal originating above operculum ; rays of soft dorsal and 



