Smithsonian miscellaneous collections . ca containing unfertilized eggs; one(arrow ) has developed but, failing to hatch, died and turned dark. X 37,Ootheca shown in figure 36 with one wall removed to reveal the well-de-veloped embryo. X 38, Embryo shown in previous two figures re-moved from the ootheca. X 9- Figs. 39-40. Blattella germanica. 39, Ootheca containing unfertilized eggs oneof which has developed (arrow). X 40, Developed embryo removedfrom the ootheca. X 9- Figs. 41-45. A parthenogenetically developed embryo of Supella supellectiliumwhich, when dissected out of the o
Smithsonian miscellaneous collections . ca containing unfertilized eggs; one(arrow ) has developed but, failing to hatch, died and turned dark. X 37,Ootheca shown in figure 36 with one wall removed to reveal the well-de-veloped embryo. X 38, Embryo shown in previous two figures re-moved from the ootheca. X 9- Figs. 39-40. Blattella germanica. 39, Ootheca containing unfertilized eggs oneof which has developed (arrow). X 40, Developed embryo removedfrom the ootheca. X 9- Figs. 41-45. A parthenogenetically developed embryo of Supella supellectiliumwhich, when dissected out of the ootheca (41), succeeded in shedding (42-45) its embryonic membrane (44, arrow). This individual later developedinto an adult female. X 9- Figs. 46-48. Hatching of a parthenogenetically developed egg of Periplanetaamericana. The embryonic membrane (47, arrow) was left behind attachedto the ootheca. Two embryos were caught between the lips of the keel andfailed to hatch. X 7-7- SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 122, NO. 12, PL. 6.
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Keywords: ., bookcentury1800, bookdecade1860, bookidsmiths, booksubjectscience
