. Journal of anatomy. y Dobson to be elongated, as itis in most of the Microcheiroptera. In Cynonycteris agyptiaca (see fig. 3) the glans is simple, and theurethral orifice is terminal. The testes in all the specimens that I haveexamined are very large, and the scrotum, which is pre-anal in position,is pigmented in most specimens. There is a small broad ossicle inthe glans. In Pteropus medius (see fig. 4) the penis is deeply pigmented, the glansbeing black. The urethral orifice is situated upon the upper surface of theglans, which has a slightly lobulated extremity. Upon the under surface 42 P
. Journal of anatomy. y Dobson to be elongated, as itis in most of the Microcheiroptera. In Cynonycteris agyptiaca (see fig. 3) the glans is simple, and theurethral orifice is terminal. The testes in all the specimens that I haveexamined are very large, and the scrotum, which is pre-anal in position,is pigmented in most specimens. There is a small broad ossicle inthe glans. In Pteropus medius (see fig. 4) the penis is deeply pigmented, the glansbeing black. The urethral orifice is situated upon the upper surface of theglans, which has a slightly lobulated extremity. Upon the under surface 42 Professor Frederic Wood Jones of the o-lans are a number of backwardly-directed corneous elevationswhich o-ive a distinctly barbed character to this structure. These copulatoryspurs are of interest not only as being reminiscent of the much largerstructures present in some lower Mammals, but also because they have theirrepresentatives in human anatomy. The scrotal area of Pteropus is deeply pigmented, but the pigment is. Fir„ .^.—Ci/no7iijcteris ccffi/ptiaca. Mammarygland of an adult female. confined to two definite patches which do not extend over the whole of thefully distended scrotal area. Distinct pubic hair is well marked. Thereis a small broad ossicle in the glans. Mammary Glands. The mammary glands are two in number and pectoral in position (seefig. 5). The nipples are large, and in old specimens the breast tends tobecome pendulous. The gland tissue, as in all bats, extends for a remark-able distance backwards upon the surface of the M. serratus magnus; much The Genitalia of the Cheiroptera 43 of it beino- actuall}- situat<(l upon the dorsal surface of the animal. This isevidently an adaptation to aerial life, and presunuiljly is to permit offreedom of movement on the part of the great M. pectoralis major. Pelvic Symphysis In none of the Megacheiroptera is there a ventral meotincr of the pubicbones. In the females the gap between the two sides of the bony pelvis is
Size: 1194px × 2093px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1860, booksubjectanatomy, bookyear1867
