. Class book of economic entomology, with special reference to the economic insects of the northern United States and Canada. Beneficial insects; Insect pests; Insects; Insects. STRUCTURE, GROWTH AND ECONOMICS OF INSECTS 29 domen—never in the last. In most insects there is in the female a seminal receptacle, a dorsal pouch of the vagina, and in the male a seminal vesicle, a dilated portion of the vas deferens. The ova are formed in the ovarian tubes in different stages of growth, the largest and oldest being nearest the oviduct. The spermatozoa arise in the -susp. Please note that


. Class book of economic entomology, with special reference to the economic insects of the northern United States and Canada. Beneficial insects; Insect pests; Insects; Insects. STRUCTURE, GROWTH AND ECONOMICS OF INSECTS 29 domen—never in the last. In most insects there is in the female a seminal receptacle, a dorsal pouch of the vagina, and in the male a seminal vesicle, a dilated portion of the vas deferens. The ova are formed in the ovarian tubes in different stages of growth, the largest and oldest being nearest the oviduct. The spermatozoa arise in the -susp. 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 Lochhead, William, 1864-. Philadelphia, Blakiston


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Keywords: ., bookcentury1900, bookdecade1910, booksubjectinsects, bookyear1919