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. Transactions of the Entomological Society of London. thelast ecdysis the insects eat enormously (as can be seenfrom Diagram III), afterwards, generally speaking, theygradually eat less and less. As the same diagram indicates,there is considerable correspondence between the foodconsumed and the eggs produced. As with the egg-dropping, so too with the food consump-tion, the size of the insect appears to have nothing to dowith the results, and according to Table XV a shorterinsect may eat more than a longer one. Table XV.—Food Consumption by Full-Grown Insects. Speci-mensNum-ber. Length of Inse
. Transactions of the Entomological Society of London. thelast ecdysis the insects eat enormously (as can be seenfrom Diagram III), afterwards, generally speaking, theygradually eat less and less. As the same diagram indicates,there is considerable correspondence between the foodconsumed and the eggs produced. As with the egg-dropping, so too with the food consump-tion, the size of the insect appears to have nothing to dowith the results, and according to Table XV a shorterinsect may eat more than a longer one. Table XV.—Food Consumption by Full-Grown Insects. Speci-mensNum-ber. Length of Insect. nun. Total sq. mm. of Leaf consumed. No. ofDayslived (IlndPeriod). TotalNo. ofEggsdrop-ped. Averages. Eggsdroppedper Day. Sq. Leaf con-sumedper Day. ot Leal f Leaf con eon-sumed sumed L™fh dropped. Insect. 69889799 80797579 111,438138,341118,835113,979 187211 200210 471591554 536 2-522-82-772-55 .->:n;656594543 1392 2381751 2341584 2141443 213 94 70 56,049 142 253 1-78 395 800 221 Aver. 78-2 120,648 202 538 2-66 1 597 1541 225. 380 The Growth and Habits of Carausius morosus. 381 Water-drinking. It has been mentioned that on hatching out water isfrequently imbibed with avidity. Afterwards, unlessimproperly fed or neglected, the nymphs and insects avoidwater. Towards the end of life, when for days togetherthey are unable to eat and therefore to take in moisturewith their food, they will search for water and remainwith their mouths immersed for many minutes. Cannibalism. They will bite off one anothers appendages if notsufficiently supplied with food. At the Manchester Museumonce during vacation some stick insects were left for about7 to 10 days without being fed. At the end of that periodout of 24 specimens only 5 remained perfect, all the othershaving their appendages more or less mutilated, smallportions of which were found lying on the floor of thejar. There were no body mutilations. I have had two cases in which one full-grown insect wasmutilated by one
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Keywords: ., bookauthorr, bookcentury1800, booksubjectentomology, bookyear1836