280 Dr. Richardson on an undesa-ihed Australian Fish. 



XXXVI. — Generic characters of an undescribed Australian Fish. 

 By John Richardson, M.D., F.R.S. &c., Medical Inspector 

 of Naval Hospitals. 



Forma compressissima, circumscrlptione lateral! semiparabolica : 

 facie frontata oblique retro descendenti. 



Os parvum, rictu fere horizontali, parum declivi. Maxilla inferior 

 porosa, cirris minimis parce 2)raedita. 



Denies minutissimi (microscopici), arenacei in maxillis utrisque, 

 ossibusque pharyngeis stipati. Lingua, vomer, j^alatumque Iseves. 



Oculi laterales in summa gena positi. 



Ossa capitis opercular umqiie inermia, sulcatim insculpta. 



Os preorbitale membro tenui verticali, disco infero dilatato in- 

 sculpto. Catenula suborbitals membranaceo-tubulata, nee ossea, 

 oculo remota, e disco preorbitalis ad tempora, genam transcurrens. 



Apei-tura branchialis ampla, postice infraque etiam intra ramos 

 maxillae inferioris, ad mentum usque, extensa; super operculum clausa. 

 Membruna brunchiostegu superne apiculata, infra nee isthrao annexa 

 nee cum pari suo conjugata ; radiis sex sustenta. 



Squamce nuUae. Cutis Isevissimus. Linea lateralis postice summum 

 dorsum attingens. Anus medianus, paj)illa nulla. 



PinntB pectorales satis magnse, pauciradiatse, humiles, positione, 

 forsitanque functione ventrales pinnas quee desunt simulantes ; radiis 

 tenuibus, indivisis, articulatis. 



Pinna dorsi pinnam Agriopi referens, per totum dorsum ab ex- 

 tremo fronte ante oculos ad pinnam caudse usque, cui membrana con- 

 nexa, regnans ; radiis ejus et jiinnis ani articulatis, attenuatis vix a 

 radiis non articularibus, oculo nudo dignoscendis. 



Pinna ani a pinna caudaj discreta. Radii pinnas caudse indivisi, 

 tenues, articulati. 



Obs. — Anatomia ignota. Vertebrae circiter 35, quarum IS ad cau- 

 dam pertinentes. Nescio an inter Gobiidas an cum Blenniidis re- 

 censendus sit Patacus *. In forma corjjoris pinnseque dorsi, necnon 

 in sculpturis ossium capitis analogiam Agriopo exhibet ut aifinis ejus 

 Choenicthys. Triglam simulat. 



Pat/ecus fronto, species unica adhuc detecta. 



Rad.— Br. 6; D. 24|16; A. Ilj5; C. ; P. 8. 



Icon. Zoology of the Voyage of the Erebus and Terror, plate — } 



Hub. Southern Australia. A specimen presented to the British 

 Museum by Governor Gray. 



* Til. TrarcciKol, simulacra deorum Phoenicum in ])uppibus. 



