i2o NEW ZEALAND ENTOMOLOGY. 



appear to be also suited for raptorial purposes, which leads 

 me to believe that the insect may be carnivorous in its 

 habits. The pupa (Fig. 3b) does not materially differ 

 from that of the last, except in size, and its empty exuvia 

 is also frequently found attached to the stems of trees. 



The perfect insect may be at once discovered by the 

 peculiarly shrill note emitted by the male. 



Family AphiD/E. 



This family is extensively represented in New Zealand, 

 but as I have not yet been able to obtain any information 

 respecting their specific identity I am compelled to pass 

 them by for the present, hoping that future investigation 

 will reveal much that is interesting in their habits, and 

 also help both gardener and agriculturist to protect himself 

 from their ravages. 



Family COCCIDID.E. 



Coelostoma .zealandiatm (Plate XX., fig. 4$). 

 This species is figured as a representative of this very 

 curious family chiefly on account of its great similarity to 

 a Dipterous insect, the rudimentary condition of its pos- 

 terior wings being most perplexing to the beginner. Its 

 habits have been amply described by Mr. Maskell, in his 

 work on the Coccididae of New Zealand, to which I con- 

 sequently refer 



Group HETEROPTERA. 



Family NOTONECTID^E. 



Corixa zealandica, n.s. (Plate XX., fig. 5). 



Abundant throughout the summer in all slow-running 

 streams. The larva closely resembles the imago except that 

 it has no wings. Its food probably consists of the juices 

 of other insects. The present insect invariably swims with 



