54 



though I am not so sure of the last being in the tropics. It 

 is curious to remark also that species of certain plants which 

 have become abundant weeds in Great Britain are spreading 

 to an equal extent in some parts of this continent. Thus 

 Galensofja parviflora is a South American Composite weed 

 which has of late years become a very wide-spreading 

 nuisance in the gardens around London. It is likewise 

 very abundant in all gardens about Port Jackson and 

 Brisbane. This weed is a species of Amaranthus, one of the 

 most common and disagreeably abundant garden weeds of 

 New South Wales 



1 have not alluded to UIcx cnropeus or common furze, which 

 has spread so rapidly and so disagreeably in Tasmania. It is 

 not known as a weed in Australia. 



DESCRIPTION OF TWO NEW SPECIES OF FISHES 

 (TBACHICHTHYS MACLEAYI, AND MENDOSOMA 

 ALLPORTI), CAUGHT IN THE ESTUARY OF THE 

 DERWENT. 



By R. M. Johnston, F.L.S. 



[Read Uth October, 1880. 



Mendosoma, Gay. 



One dorsal fin deeply notched, with twenty-two spines 

 (23) ; the anal fin of moderate length, the caudal forked ; 

 the simple pectoral rays feeble, not exceeding the margin of 

 the fin. Small teeth in the up2:)er jaw only ; none in the 

 lower, or on the palate. Scales of moderate size ; cheeks 

 scaly. Six branchiostcgals. 



Mendosoma, Allporti. New sp. 



B (), D 23^V. A yV P 16. V i L. lat. 76, L. tr. y^. Body 

 elliptical, compressed. Head small, pointed. Cheeks scaly. 

 Height of body is 3} in the total length, the length of the 



