28 3 



of crown and on operclcs. Lateral line absent. Gillmembranes 

 free from isthmus and from each other. 



Fig. 74. Psendoniugil gertrudae M. Web. 

 Male and the more spotted caudal of another male. 



Distribution: Freshwater of Queensland, N. S. Wales, 

 Aru-Islands and Southern New Guiaea. 



Fig. 75. Pseudomugil gertrudae M. Web. Female. 



Key to the indo-australian species of 

 Pseudomugil. 



1. Origin of first dorsal well in advance of that of anal. 



Mouthopening small P. gertrudae p. 283. 



2. Origin of first dorsal above or slightly behind or 



before that of anal. Mouthopening large P. novae-guineae p. 284. 



i. Pseudomugil gertrudae M. Web. ') [Figs. 74, 75, p. 283]. 



Pseudomugil Gertrudae Max Weber, Abhandl. Senckenb. Naturf. Gesellsch* 

 XXXIV. 1911, p. 23. 



i) The specific name "'gertrudae''' 1 is wrongly changed by JORDAN & HUBBS 

 (Monograph, review of Atherinidae, Stanford University Publications 1919, p. 28) 

 in "-gertrudei" . 



