on the Bionomics of Southern Nigerian Insects. 377 
rate, so far as I can make out, there is nothing on the larval 
epidermis to scratch anybody’s hand. On putting the 
larva down there was no atter-sensation which hardly 
indicates stinging. I had another larva very similar in 
appearance but a different species—if anything smoother. 
I thought at first that it had not the same property. I 
tried it on the boy and he felt it. I tried it again myself, 
but though it was rather less pronounced than the other, 
there was no question about it responding in the same way. 
I will put up spirit material and perhaps Dr. Eltringham 
will investigate the nature of the gland-cells, for I’m sure 
the minute yellowish dots are the seat of the response, 
whatever its nature. I myself believe it to be electrical. 
I find it hard to say why, except that it reminds me of 
nothing else so much as the queer “ internal tickling that 
a faint discharge produces. * Internal” is the only adjec- 
tive L can think of, meaning thereby that the sensation is 
felt up the inside of the finger, as it were, rather than on 
the surface, like tickling, in fact. I do not know the vocabu- 
lary of experimental psychology, but perhaps you see what 
I am trying to get at. The cryptically coloured, knobby 
larva [of E. farquharsoni] does not possess the property. 
I have got, I think, ten of these now, but none so far have 
pupated. 
Dec. 29, 1917.—The larva [of E. farquharsoni| 2s slightly 
“ lectric’”? also, perceptibly so in well-grown larvae. 
Tanuetheira timon is the form with the most markedly 
“ electric’ larva. 
March 23, 1918.—I thought of an electroscope, but I fear 
that is beyond my reach, though I may manage to borrow 
one at the High School in Lagos. 
(Dr. Eltringham is inclined to think that the “ electric ¥ 
sensation may be caused by a shivering motion of the larva, 
causing the rough cuticle to vibrate against the skin: 
pp. 484-85.] 
B. Nores on THE LirE-HISTORY OF TWO SPECIES OF 
DEUDORIX AND ONE OF CATOCHRYSOPS WHICH BORE 
iN THE Pops oF CANAVALIA mnstrormis D. C. 
(LEGUMINOSAE). 
[The following material illustrates the notes :— 
1. Deudoriz antalus Hopfi.—2$ 5°, emerging Feb. 
19-23, 1918, and 19 March 1. Each of the former 7 is 
