9 
on 
established, it increased very rapidly in numbers. Owing to the 
less tropical climate of the Hawaiian Is. as compared with its 
native home the Philippines, the life-cycle seems to average slight- 
ly longer in the former place. Thus records show that the egg 
hatches in from three to five days and that the feeding period 
for the Scolia larva is from six to ten days, and that the whole 
life-cycle occupies from 40 to 55 days. One captive female 
lived for nearly four months, but only laid nine eggs during that 
time. Five bred females on which Mr. Osborn kept records at 
the insectary at Waipio (near Honolulu), averaged 23 eggs 
apiece, and the average ee of life was 49 days. Thirty-two 
was the highest number of e gs by one female in this lot. 

Fig. 25. Cocoon of S. manilae on Anomala grub, * 5 
(after Swezey). 
Scolia manilae is now far more abundant in the cane fields 
near Honolulu than we ever found it at Los Banos, Philippines. 
Indeed, in view of the rapidly disappearing Anomala orientalis 
beetle from the cane fields here and the scattered distribution of 
the Rose beetle (Adoretus tenuimaculatus Waterhouse ), cue ele 
ders how the wasp manages to remain so plentiful. Mr. H. 
Swezey has found it in the immature stages on Anomala ae 
in the field, and we have found it in one or two cases on Adoretus 
grubs in a cane field. On Oahu, we have caught for distribution 
many thousands of females. They were taken with a net, forceps 
or fingers,—their sting is not very startling—as they were feed- 
ing at the flowers of Stachytarpheta, Bidens or Euphorbia 
growing along canefield roads. Scolia hunting is profitable only 
on fay orable mornings, as during the afternoon both sexes— 
though the males w ith probably some exceptions—bury them- 
selves and remain underground until the following morning. 
