330 COMPARATIVE ANATOMY. 



The apex of the organ is spoken of as the glans(glans penis 

 vel clitoridis) ; this varies much in form, and lies enclosed within 

 a fold of the skin, which in the male is called the foreskin or 

 prepuce. The glans is provided with a special kind of tactile 

 corpuscle. 



Finally, the accessory organs, which are known in the male as 

 preputial and Cowper's glands, and the representatives of the 

 latter in the female (glands of Bartholini), must be mentioned 

 (Fig. 256, CcT). All these, as well as the prostate (PD), which 

 belongs to the same category, open at various points into the 

 urethra, and have always a paired arrangement. 



BlBLIOGKAPHY. 



BALBIANI, G. Lemons sur la, generation des Vertebres. Paris, 1879. 



BALFOUE, F. M. On tlie Nature of the Organ in Adult Teleosteans and Ganoids, 



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Micros. Science, Vol. XXII. 1882. 

 BALFOUR, F. M., and PARKER, W. N. On the Structure and Development of Lcpi- 



dosteus. Phil. Trans. 1882. 

 BENEDEN, E. VAN. Recherches sur la maturation de I'osuf, la fecondation et la 



division cellulaire. Gand, Leipzig and Paris, 1883. 

 BOURNE, A. G. On Certain Abnormalities in the Common Frog. Quart. Journ. 



Micros. Science, Vol. XXIV. 1884. 

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Institut d. Universitdt Wurzburg, Bd. IV. 1877. 

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fische. Morphol. Jahrb. Bd. IV. 1878. 

 EMERY, C. Zur Morphologic der Kopfniere der Tcleostei. Zool. Anz. VIII. Jahr- 



gang, 1885. 

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der Vertebraten. Morphol. Jahrb. Bd. IV. 1878. (Contains also a complete 



bibliography. ) 

 GROSGLIK, S. Zur Morphologic der Kopfniere der Fische. Zool. Anz. VIII. Jahr- 



gang, 1885. Zur Frage ub. die Persistenz der Kopfniere der Teleosteer. Ibid. 



IX. Jahrgang, 1886. 

 HENSEN, V. Physiologie der Zeugung. Handbuch der Physiologic von L. HERMANN. 



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KNAPPE. Das Bidder' sche Organ, &c. Morphol. Jahrb. Bd. XI. Heft 4, 1886. 

 LEREBOTJLLET. Rech. sur I'anatomie des organes gnitaux des animaux vertebres. 



Nov. act. Acad. Leop.-Carol, &c. 1851. 

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Vaginal Apparatus in the Macropodidce. Proc. Zool. Soc. 1881. In reference to 



same subject, see also J. J. FLETCHER in Proc. Linn. Soc. N.S. W. 1881, 1882, 



and 1883. 

 MARSHALL, A. MILNES. On Certain Abnormal Conditions of the Reproductive Organs 



in the Frog. Journ. of Anat. and Physiol. Vol. XVIII. 1884. 

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Abhandl. Der Excretionsapparat. Internal. Monatschrift f. Anat. und Hist. 



Bd. II. 1885. 

 MOBIUS, K. Ueber die Eigenschaften und den Ursprung der Schleimfdden des 



Seestichlingnestes. Archivf. Mikr. Anat. Bd. XXV. 1885. 

 PARKER, T. J. On the Gravid Uterus of Mustelus antarcticus. Trans. N. Zealand 



Inst. 1883. 



PFLUGER, E. Die Eierstocke der Sdugethiere und des Menschen. Leipzig, 1863. 

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thieren. Zool. Anz. IX. Jahrgang, 1886. 



