222 
Psyche 
[October- December 
Zealand, it must remain for the present somewhat doubtful 
whether Tanyzonus bolitophilce Marshall and Betylafulva Cameron 
are identical. Concerning this point, I cannot satisfy myself 
from Marshall’s description. 
The three genera may be distinguished by the following key* 
which includes also the related Neobetyla Dodd of which I have 
a specimen kindly sent me by Mr. Dodd. 
Females. 
1. Petiole of abdomen bearing a large tooth below; scutel- 
lum absent. Betyla Cameron 
Petiole of abdomen simple below; scutellum present. . 2. 
2. Antennae 13-jointed; wings present, much abbreviated, 
attaining the tip of the propodeum 
Probetyla gen. nov. 
Antennae 15-jointed; wings entirely wanting 3. 
3. Propodeum with three spines, one at the middle above 
and one at each side behind the middle; pronotum 
along the median line, as long as the mesonotum. . . . 
Parabetyla gen. nov. 
Propodeum without spines; pronotum visible from 
above only at the sides Neobetyla Dodd. 
There are two specimens which are probably Cameron’s B. 
fulva, taken by Mr. Philpott on Dun Mt. ., March 15, 1921 
at an altitude of 2000 feet. 
Probetyla gen. nov. 
Antennae 13-jointed, the club slender, not clearly differen- 
tiated, although the last six joints of the flagellum are thicker 
and moniliform; first flagellar joint longer than the pedicel, sim- 
ple. Head seen from above quadrate, the temples broad. Eyes 
small, round, hairy. Maxillary palpi 5-jointed; labial palpi 
3-jointed; left mandible with two long teeth; right one broader 
and probably with three teeth. Ocelli small, hyaline, in a small 
triangle. Thorax two-thirds as wide as the head, not constricted 
behind the mesothorax. Pronotum scarcely visible from above 
