BY AGNES F. KENYON. 27 



Cy. angustata (var.): I found at Flinders, Victoria, several 

 specimens with the margins unspotted and dorsal surface 

 uncoloured. 



On the occurrence of a Sulcus in Trivia australis It is some- 

 what unusual to find any species of the genus Trivia with a 

 dorsal impression or sulcus, as the authorities have agreed in 

 defining them with none. I have, however, several specimens 

 distinctly marked; also one in which the base is not white; and 

 one which has only one spot at each end may be pronounced a 

 Victorian variety of T. napolini, it having been found at Flinders, 

 Victoria. I have also a pair of 7'. napolini from West Australia 

 with a distinct sulcus. 



It will therefore be noted that some of the distinguishing 

 marks of this genus are absent in these specimens. 



