EAST AFRICAN INSECT8. 1033 



emergerl this evening. I will give the rent of the dates of 

 emergence serially, with the numbers of moths whicli emerged 

 from the cocoon each day. (Morogoro, IS.iii. 18) : 



March 19th 9 March 25th ......... 40 



After this not more than ones or twos emerged at long 

 intervals and often crippled, the total not exceeding ten. If Ave 

 assume there were ten, it gives the astonishing total of 240 moths 

 emerging from this one cocoon. (Morogoro, 30. iii. 18.) 



Found a second cocoon on a small shrub n.nd, assuming the 

 moths had emerged, put it away in a trunk. (Kilosa, 30. xii. 20.) 

 On opening the ti'unk I found some 14 or 16 had recently 

 emerged. (Kilosa, 10. iii. 21.) From this date the following 

 emei'gences took phi.co : — 



March 11th 4 March 17th 1 



„ 12th 2 „ 18th 2 



,, 13th ......... 2 „ 19th nil 



„ 14th 2 „ 20th 1 



„ 15th 2 „ 24th 1 



This cocoon therefore only produced one-seventh the number 

 of the former, which Avas quite twice its size. The total number 

 emerging was 32. (Kilosa, 24. iii. 21.) 



Thinking a record of the incidence of sex among those that 

 emerged would be more interesting than the bare totals, on 

 receiving a nest from the Tabora District brought back by one 

 of my native collectors, the results were tabulated as follows : — 



December 26th 2, c? ^ 



27th 5, S 6 6 2 ^t? 



28th 3, d cT 2 



29th 2, d &? 



January 9th 1 ? ? 



„ ' 10th 8, c? C? J J r^ d 5 2 



nth 12, dc?c?Jc?$2$$$$$ 



12th 7, c?$?$$2? 



13th 2, 2 2 



14th 1, 2 



„ 17th 3, 2 2 2 (one was a cripple) 



„ 18th 1, 2 



19th 1, 2 



Total emerged 47, composed of 2 not sexed, 19 males, and 

 27 females. As one would expect, males preponderate in the 

 first days of emerging and females very markedly towards the 



