. A manual of elementary zoology . Zoology. 276 MANUAL OF ELEMENTARY ZOOLOGY are The first sternum is rudimentary, and the tenth tergum projects backwards as a plate with a deep notch in its hinder edge. A pair of many-jointed, spindle- shaped cerci anales, which may represent limbs, are attached under this plate, and below it is the anus, between two podical plates, which may represent the tergum of an eleventh segment. In the female the seventh sternum is. Fig. 181.—The ventral aspect of a male cockroach with the wings extended. An imaginary median line has been inserted.—From Thoms
. A manual of elementary zoology . Zoology. 276 MANUAL OF ELEMENTARY ZOOLOGY are The first sternum is rudimentary, and the tenth tergum projects backwards as a plate with a deep notch in its hinder edge. A pair of many-jointed, spindle- shaped cerci anales, which may represent limbs, are attached under this plate, and below it is the anus, between two podical plates, which may represent the tergum of an eleventh segment. In the female the seventh sternum is. Fig. 181.—The ventral aspect of a male cockroach with the wings extended. An imaginary median line has been inserted.—From Thomson. A., Antennae; C, cercus; Co., coxa, the breadth of which makes it look, in its present position, like a ventral plate on the body ; £., eye ; femur ; , prothorax ; St., style ; To., tarsus ; 7Y., tibia ; 7V., trochanter ; U'X, first pair of wings ; W2., second pair of wings. produced backwards into a large boat-shaped process, which forms the floor of a genital pouch, and in the male the ninth sternum bears a pair of slender, unjointed styles. The genital opening is placed below the anus and is surrounded by a complicated set of processes known as gonapophyses. The alimentary canal has long, ectodermal fore- and hind- 1 In the male P. orientalis portions of the eighth and ninth terga remain uncovered,. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Borradaile, L. A. (Lancelot Alexander), 1872-1945. London : H. Frowde, Hodder & Stoughton
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectzoology, bookyear1920
