MALE ORGANS OF BiMANA. 



673 



529 



Accessory glands and protometra, Macacus Cynomolgus. 



CCXXXIX". 



median septum dividing the corpus cavernosum : it is present in 

 all Catarhines, but degenerates into a ' pectiniform ' partition 

 anteriorly. In Macacus Cynomolgus the vesicular gland, fig. 

 529, e, is large and lobulate, its duct is long and unites with 

 that of the testis, c, some 

 way before the latter ter- 

 minates in the urethra. 

 The prostate, d, is large 

 and compact. The rem- 

 nant of the protometra, 

 b, resembles the ' sinus 

 prostaticus ' or third lobe 

 of the prostate in Man. 

 Cowper's glands are ap- 

 plied to the back part of 

 the urethral bulb. The ac- 

 celeratores muscles sur- 

 rounding the bulb do not advance between the erectores penis : 

 these arise from the sclerous covering of the crura corporis caver- 

 nosi, not from the ischia. Two small ( levatores penis,' after the 

 usual disposition for compressing the c vena dorsalis,' terminate in 

 a tendon inserted into a small e os penis.' In the Mandril (Papio) 

 the vesicular glands are so large as to appear, invested with 

 peritoneum, in the pelvis : they consist of numerous caeca which 

 terminate the subdivisions of branches given off by one main 

 central tube or duct. The prostate, also, is partially subdivided 

 into lobules. The testes, larger than in Man, slightly project, 

 one on each side the base of the penis. In Apes as well as 

 Monkeys, the i fraenum preputii ' is absent, and an ossiculum penis 

 present. Crisp found it one-third of an inch long, but gristly at 

 both ends, in the Chimpanzee. 1 



§ 381. In Bimana. — Here the testes 

 two or three months before birth, into a 

 pendulous scrotum ; the serous canal of com- 

 munication becomes obliterated, and the tunica 

 vaginalis is an independent short serous sac. 

 All the accessory glands are well developed 

 and differentiated, but of moderate proportions. 

 The penis is pendulous and without a bone: 

 the prepuce has a ( fraenum.' The spermatozoa, 

 fig. 530, have an ovoid or almond-shaped body, subcompressed, 

 viewed sideways, with a filamentary vibratile appendage, averag- 



530 



Spermatozoa of Man, magn. 

 300 diam. 



VOL. III. 



cclxxiv", p. 48. 

 X X 



