234 



From this, it is seen that egg masses were produced at inter- 

 vals of 2 to 9 days, or an average of 5 days. The eggs hatched 

 in 8 to 10 days. 



The nymphs molt 5 times including the final change to matur- 

 ity. The following is the record of one lot bred in insectarv: 



The nymphs are more or less sticky in all stages. The abdo- 

 men is rather ovate in shape and somewhat flattened above ; in 

 the younger stages it is much tilted up behind." Eyes red ; legs 

 white, ringed and spotted with black ; stages i and 2 have black 

 spines at tip of abdomen. 3, 4 and 5 have the spines also on 

 the sides of the abdominal segments, increasing in size from be- 

 fore backwards. Full grown nymph is of a light bluish green 

 color, with some reddish yellow markings on dorsum, seg- 

 mentally arranged. (PI. XVI, fig. 3.) 



One female from the above lot (matured July 7th) deposited 

 an egg-mass of 45 eggs July 23rd; or about two weeks after 

 reaching maturity. This gives a period of 55 days from laying 

 cf eggs till the young have matured and themselves laying eggs, 

 or about 2 months, which would give 6 broods per year, provid- 

 ing their development was as rapid at all times of the year. 

 Probably their development would not be so rapid during the 

 cooler months of the year — November to March. 



Reduviolus blackbnnii, White.* (Plate XVHI, figs. 1-4.) 



This pale, grayish colored native bug is generally distributed 

 throughout the sugar cane districts. Adults 'and nymphs prey 

 upon cane-aphis and young leaf-hoppers. 



* " Hemiptera," Fauna Hawaiiensis, III, pt. II, p. 155, 1902. 



