BY W. MACLEAY, F.L.S. 385 



numerous obtuse points. Suctorial teeth in numerous series, so 

 close together that the teeth have the appearance of imbricate 

 scales. A series of larger, broad, scale-like teeth round the 

 mandibulary lamina. Suctorial disk not dilated, circular. First 

 and second dorsal fins widely separate. Side and abdomen 

 silvery ; back greenish. 



Swan River. Length twenty-one inches. 



1131. Geotria Allportt, Gunth. 



Proc. Zool. Soc, 1871, p. 675, pi. 70. 



Entirely black ; skin with numerous transverse folds. Gular 

 pouch large. The two middle teeth of the maxillary lamina are 

 small, pointed, many times smaller than and entirely disconnected 

 from the lateral, which are of atriangular shape and finely serrated 

 on the inner margin. Mandibulary lamina very low, denticulated. 

 Suctorial teeth in numerous series, rather distant from one another, 

 unicuspid ; only those nearest to the mouth somewhat larger, 

 the others small. Form of the suctorial disk as in G. amtralis. 

 Distance between the two dorsal fins, less than the length of the 

 first. Length thirteen inches. 



Tasmania (fresh water). 



A curious Fish, probably an Aiiunoccetes — the name given to 

 the larval form of Fishes of this family — has been described by 

 Count Castelnau from the Yarra River, Melbourne. I quote the 

 Count's description in full. 



1132. Yarra singularis, Casteln. 



Proc. Zool. Soc, Victoria, Vol. I., p. 231, 



" The body is eel-shaped, naked, cylindrical, and elongate, 

 being twenty-three times as long as high. It is entirely divided 

 into annular rings, which appearance seems to be due to the 

 muscular flakes being very visible through the smooth skin. I 

 can see no teeth, the upper lip is fiat, and considerably prolonged 



