HuTTON. — On New Zealand Acrididas. 49 



the metasternal lobes are much closer together in the female. 

 The ovipositor is exserted, and the frontal costa is narrower 

 above the antennae and more projecting than in Podisma. 



The species are closely related to each other. All have 

 the same habit of living among stones in river-beds or shingle- 

 slips, but they have different localities. The colours also are 

 much the same, and the distinguishing marks of the species 

 must be looked for in the sternal shield and the subgenital 

 plate of the female. 



Brachaspis petricolus. Plate II., figs. 13a, 13&. 



Specimens from the bed of the Kowai Eiver are slate- 

 coloured, and the hind tibiae are not so bright as in B. 7iivalis. 

 The interspace between the mesosternal lobes in the female is 

 rather wider than the lobes, and in the male it is about equal 

 to the lobes. In the metasternum the interspace in the 

 female is more than half the width of the interspace between 

 the mesosternal lobes ; in the male the metasternal lobes are 

 subcontinuous. The subgenital plate in the female has two 

 small rounded cusps, one on each side of the apex. The hind 

 tibiae have seven or eight spines in the outer row. 



Length of the hind femur, ^ 8J-9 mm., ? 11|^-13J mm. 



Brachaspis nivalis. Plate II., tigs. ll<x-llc. 



Specimens from the shingle-slips of Mount Torlesse, from 

 3,000 ft. to 5,500 ft. above the sea. Collected by L. Cockayne. 



The interspace between the mesosternal lobes in both male 

 and female is about as wide as the lobes. The interspace 

 between the metasternal lobes in the female is about half the 

 width of the interspace between the mesosternal lobes, while 

 in the male the metasternal lobes are subcontinuous. The 

 subgenital plate in the female has two small but sharp cusps, 

 one on each side of the apex. Occasionally the hmd tibiae 

 have only six spines in the outer row. 



Length of the hind femur, ^ lli-12|mm., 2 14|— 17 mm. 



There are two varieties : — 



a. Greyish-brown or slate-blue, with the hind tibiae and 

 lower surfaces of the hind femora blue or sometimes red. 



yS. Ochreous-brown or stone-colour, with the hind tibiae 

 and lower surfaces of the hind femora rosy-red. 



Brachaspis collinus. Plate II., fig. 12. 



The interspace between the mesosternal lobes, in both 

 male and female, :s less than the width of the lobes. The 

 interspace between the metasternal lobes in the female is 

 more than half that of the interspace between the mesosternal 

 lobes, and in the male it is about half the width of that space. 

 The subgenital plate in the female has two strong and sharp 



