332 DR. LOUIS MONTANE 



Soon there could be no doubt as to her true condition, as the 

 mammary glands were becoming more prominent and the 

 abdomen was showing already a sensible volume; furthermore, 

 all signs of catamenia disappeared during the last three months 

 of pregnancy. 



This last fact definitely settles the doubt expressed by Broca 

 in his report on the order of the Primates : ' Regarding the 

 anthropoids, the question of the catamenial flow has remained 

 doubtful up to the present time, as there has been no occasion 

 to study female adults in captivity." Cucusa, in her normal 

 condition, sometimes has had very abundant losses of blood. 

 Another fact which should be mentioned, being of interest to 

 naturalists, is that, contrary to what is observed in the case 

 of most mammals, sexual relations between Jimmy and Cucusa 

 continued during the whole period of gestation, both day and 

 night. 



Finally, nine months after the first visible symptoms were 

 observed, Cucusa gave birth to Anuma on the 27th of April, 

 1915. This event established the duration of gestation of the 

 anthropoids, which up to the present has been unknown, al- 

 though suspected to be approximately as long as we have in- 

 dicated. 



The parturition of the anthropoid ape must have taken place 

 between 5 and 6 o'clock in the morning, as at 6 o'clock the 

 young ape was first noticed, resting on the contracted legs of 

 the mother and still joined to her by the umbilical cord. His 

 body was completely hairless, with the exception of the head, 

 on which hair was abundant. His eyes were wide open and 

 his gaze indicated bewilderment. 



The attitude of the mother at the moment of birth escaped 

 observation. Nevertheless, everything has led us to believe 

 that the obstetric posture of Cucusa was a crouching position, 

 as is the case among other apes. 



At 7 o'clock in the morning the umbilical cord appeared sepa- 

 rated from the mother, but still adherent to the umbilicus of 

 the young chimpanzee. No one assisted in the severing of the 

 umbilical cord. The placental extremity, together with pieces 

 of the membrane and two clots of blood, was found on the 



