. Transactions of the Entomological Society of London. alreadyreferred to. The average egg-production is 480 per insect, the highesttotal reached by any one insect, No. 100, amounting to712 eggs. The largest number of eggs laid in one day by one insect(No. A) was 11, which happened to be her start off with egg-dropping. Quantities of 10 and 9 are rare, but 8 and 7eggs dropped in 24 hours by one insect are not rare, while6 in a day are common enough. The highest total recordedfor 3 consecutive days is 20 (by No. 97), equal to 66 perday, and for 15 consecutive days 63 (by No. 77), equal to42 egg
. Transactions of the Entomological Society of London. alreadyreferred to. The average egg-production is 480 per insect, the highesttotal reached by any one insect, No. 100, amounting to712 eggs. The largest number of eggs laid in one day by one insect(No. A) was 11, which happened to be her start off with egg-dropping. Quantities of 10 and 9 are rare, but 8 and 7eggs dropped in 24 hours by one insect are not rare, while6 in a day are common enough. The highest total recordedfor 3 consecutive days is 20 (by No. 97), equal to 66 perday, and for 15 consecutive days 63 (by No. 77), equal to42 eggs per day. The average number of eggs dropped byall the insects under observation as per Table VI is T8 perday, but if we eliminate the imperfect or weak parents weget a more normal average of 2-2 per insect per day. Theaverage record is affected in two ways : (1) by the intervalelapsing between the last ecdysis and first egg-dropping,and (2) by the number of days lived after the last egg hasbeen dropped. As regards the first interval, it is present. 360 The Growth and Habits of Carausius morosus. 361 in every case with a very even average of days, and so maybe left out of consideration. As regards the later interval,there is considerable variation. Nos. 88 and 68e died inthe midst of their egg-dropping, so there was no interval;No. 42 died 29 days after her last egg was dropped; No. 43died 30 days after, while No. 68/died 45 days after droppingher last egg, and so on. Excepting the case of No. 159, the abnormally shortinsect, there does not appear to be any actual correlationbetween the size of the insect and the quantity of egos itcan produce. For instance, one insect 73 mm. long produced 595 eggs,and another 83 mm. long produced 536 eggs, or 59 eggsless, although it was 10 mm. longer. Four insects 79 mm. ABNORMAL RK5-HTSIDE NORMAL ^NTRM? DORSAL^ RIGHTASPECT ASPECT 5IDE.
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Keywords: ., bookauthorr, bookcentury1800, booksubjectentomology, bookyear1836
