...Sperm retention and delayed fertilization allow young to be produced without copulation occurring in each breeding season... 
Ray D. Burkett 「Natural History of Cottonmouth Moccasin, Agkistrodon piscovorus (Reptilia)」
...When the male did not attempt to approach again, thefemale appeared to invite copulation by moving in front of himwith tail elevated and the colored ventral surface prominently displayed...
Robert K Selander 「Vertebrates from the Barrier Island of Tamaulipas, México」
...In thebitch a desire for copulation, with a disinclination to accept the dog,is to be regarded with suspicion; as is also a display of peevishness anda wish to be undisturbed in full-grown animals...
Dinks, Mayhew, and Hutchinson 「The Dog」
...Reiterated copulation does not appear to produce abortion inthe sow; at least to the extent it does in other animals...
Robert Jennings 「Sheep, Swine, and Poultry」
...Inferior appendage -es: in male Odonata the lower oneor two of the terminal abdominal parts used to clasp the femalein copulation...
John. B. Smith 「Explanation of Terms Used in Entomology」
...Rammel-kammer: = copulation chamber; q...
John. B. Smith 「Explanation of Terms Used in Entomology」
...He thought that the queen'sfecundation followed actual copulation...
Francis Huber Anonymous 「New observations on the natural history of bees」
...But we do not despair of being able next spring toobtain the complement of this proof, by seizing the female at the verymoment of copulation...
Francis Huber Anonymous 「New observations on the natural history of bees」
...The queen bee is not impregnated ofherself, but is fecundated by copulation with the male...
Francis Huber Anonymous 「New observations on the natural history of bees」
...I was excessively impatient to learn whether, on thereturn of spring, she would prove fertile, without a new copulation...
Francis Huber Anonymous 「New observations on the natural history of bees」
...Lastly, it follows, that althoughcold will retard the laying of a queen impregnated in autumn, she willbegin to lay in spring without requiring new copulation...
Francis Huber Anonymous 「New observations on the natural history of bees」
...But it isotherwise with the females whose copulation has been retarded: theyproduce no workers' eggs...
Francis Huber Anonymous 「New observations on the natural history of bees」
...To our infinitesurprise, what we had supposed the residue of the prolific fluid,actually proved the genital organs of the male, which separate from hisbody during copulation, and remain in the female...
Francis Huber Anonymous 「New observations on the natural history of bees」
...Kangaroo rats are among those rodents in which the vagina becomesplugged with a rather solid material, translucent, and of theconsistency of a stiff gelatine, after copulation...
Charles T. Vorhies and Walter P. Taylor 「Life History of the Kangaroo Rat」
...'Magdalene de la Croix, Abbesse des Moniales deCordoüe en Espaigne, confessa que Satan n'eust point copulation, nycognoissance d'elle, qu'elle n'eust douze ans...
Margaret Alice Murray 「The Witch-cult in Western Europe」
...In the case of Isobel Elliot, the Devil 'offered to liewith her, but forbore because she was with child; that after she waskirked the Devil often met her, and had carnal copulation withher'...
Margaret Alice Murray 「The Witch-cult in Western Europe」
...In thegreater number of cases where copulation is shown a god and a femalefigure are pictured...
Alfred M. Tozzer and Glover M. Allen 「Animal Figures in the Maya Codices」
...The copulation of two coalescing cells, which in these casesoften precedes the reproduction, cannot be regarded as a sexual act unless thetwo copulating plastids differ in size or structure...
Ernst Haeckel 「The Evolution of Man」
...For this copulation ofthe two sexual nuclei (Figs...
Ernst Haeckel 「The Evolution of Man」
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