Annual report of the Fruit Growers' Association of Ontario, 1898 . be removed, as the coalescence is only effectedbetween the interior portions, the two portions of the pupa case never uniting. Theparaffin ring naturally tends to prevent the imagos emerging and they have to be helpedout when they seem, from the papery condition of the pupa case, to be ready for emer-gence, the case being picked off bit by bit. In general, the wings fail to expand and as a consequence the abdomen remainsdistended by the hsemolymph. In some cases the wings, or a majority of them, expandvery well, one, perhaps, b
Annual report of the Fruit Growers' Association of Ontario, 1898 . be removed, as the coalescence is only effectedbetween the interior portions, the two portions of the pupa case never uniting. Theparaffin ring naturally tends to prevent the imagos emerging and they have to be helpedout when they seem, from the papery condition of the pupa case, to be ready for emer-gence, the case being picked off bit by bit. In general, the wings fail to expand and as a consequence the abdomen remainsdistended by the hsemolymph. In some cases the wings, or a majority of them, expandvery well, one, perhaps, being aborted. In the case of a tandem junction, the anteriorone may expand and the posterior one not. In such a case the former had only lost thetip of its abdomen, while the lower one had lost its head. In one case where two portionsof pupse were joined laterally, one eye in one part had coalesced with the neighbouringone in the other part to form a common eye. As a rule, the operations greatly retardedthe development of the specimens. 24 ENTOMOLOGICAL SOCIETY. Fig. C. Operation of the third category. United pupse and united im agines of S. Ceeropia. One of the objects of these experiments was to see what effect, if any, the unionswould have on the colours of the resulting moths, but the results were rather negative,as nothing very definite was obtained.
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Keywords: ., bookcentury1800, bookdecade1890, bookida, booksubjectfruitculture
