File:Journal of morphology (1909) (14586954090).jpg

Identifier: journalofmorphol20wist (find matches)
Title: Journal of morphology
Year: 1909 (1900s)
Authors: Wistar Institute of Anatomy and Biology
Subjects: Morphology Physiology
Publisher: Boston : Ginn & Co.

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e axial line insteadof twenty. The egg was incubated for twenty-four and one-half hours, andthe injury is situated slightly more posteriorly than in the preceding experi-ment. X 25. Fig. 70. In this embryo the injury was made between three and fourhours after incubation had begun, at about forty-five degrees to the rightof the axial line on the boundary between the areas opaca and pellucida.The egg was then incubated for thirty-six hours. The embryo is normalin every way and the injured spot is in the vascular area, about half waybetween the shvus tcrminalis and the pellucid area. X 18. Fig. 71. The injury in this blastoderm was made on the posterior marginforty-five degrees to the right of the median line. The operation was per-formed thirty-three and one-half hours after fertilization, and the egg wasthen incubated for thirty-six hours. The group of injured cells has beenbrought into the axis of the embryo, x 21. iASTRULATIOX IX THE TkiKONS EgG. .1. Tllos. !\ II !■ ;;s(,\ Flate X.
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:e Jouexal of Monrnor.nnY,- -Vol. XX, \o. 1 • NUTEITION OF THE OVUM OF SCOLIA DUBIA. BY WILLIAM A. KEPNER. With 2 Plates. In SeiDtember, 1906, many larvae of Allorhina nitida were work-ing in the sandy soil and sparse sod of a certain part of the Universitycampus. These larvaj ^\ere being attacked by the very few femaleScolia dnbia attended by the more numerous males. Specimens ofboth the larvae and the wasp were then collected and later sent to Dr.L. O. Howard, Chief of Bureau of Entomology, Washington, D. C,where they were identified by Dr. F. H. Chittenden as Scolia dubiaand its host the %rub-worm or white grub, Allorhina nitida, com-monly known as the green June beetle or fig eater. In September, 1907, the larvae of Allorhina nitida were very scarce,but in their place an extensive swarm of Scolia dubia appeared. Ofthese the females, as they crept over the soil or burrowed into it, werecaught and various tissues fixed for future study. The material forthis work was all taken from

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