SUNDOGS AND HALOS SEEN AT NJORO 93 
2 inches. Head green, legs and claspers green, latter rather 
hairy. Generally, uniform clear grass green. A supra- 
spiracular longitudinal pale yellow band connects the pro- 
cesses on 2 with the tail points. On this on each segment 
two brighter chrome spots. 2. Margined fore and aft with 
black narrowly. Processes yellow tipped with black. 4 and 
5 each with two simple blue-black dorso-lateral spines sprout- 
ing from orange tubercles. Tail points yellow. Ostmateria 
green. Before pupation the larva shrinks considerably (to 
about 1 inch in length) and becomes a very pale clear green. 
Pupation effected in three minutes. 
Pupa . — The resemblance to P. Agamemnon continued. 
Attached by tail and short body, strung to a stem of the 
food-plant under a leaf. 
The head ends in two points, fairly sharp. The thorax 
is keeled and produced forward into a fairly long horn. Other- 
wise the pupa tapers gradually and evenly to the sharp anal 
point. In colour it imitates the leaf of the food-plant, every 
segment being regularly veined. A pale green spiracular stripe 
from tip of horn to tail. Two longitudinal subdorsal slightly 
divergent stripes of a similar colour from base of horn to tail, 
where they unite. Pupal period, eleven to twelve days. 
SUNDOGS AND HALOS SEEN AT NJORO 
NOVEMBER 5, 1909 
By W. A. Tunstall 
The rainbows to the N. and S. of the sun appear to vary, 
at times appearing to be concentric with the sun, at others 
to have their centres N.E. and S.E. on or about the horizon. 
Maximum brilliance of phenomenon about 9.15 or 9.80 a.m., 
Figs. 4 and 5, when red (bronze) part of spectrum of figures 
surrounding the sun very pronounced. 
10 a.m. — Fig. 6. Surrounding circle and ellipse nearly 
