122 Kansas Academy of Science. 



itself may be significant of a period of seclusion or less activity 

 among the females during the period of pregnancy. 



While, as above stated, the normal number of young is four, 

 there were two cases in which there was but a single foetus in one 

 horn of the uterus; the other horn contained two, as usual. In one 

 instance, also, there were five foeti. 



That development after birth is quite rapid is shown by the 

 litter of young moles referred to in the last item in the accompany, 

 ing table. These were discovered in a nest of dry grass, under 

 some sod, April 22. The sod had been turned over by the plow 

 only about ten days previously. Although still perfectly hairless, 

 these young moles weighed one ounce each — from one-fourth to 

 one-third the weight of the adult. In all my trapping I have taken 

 but three or four moles that seemed to be undergrown. 



Results of the Examination of 38 Female Moles for Breeding Conditions. 



Date. Conditions for Breeding. Number of Embryos, etc. 



Dec. 11. . .No signs of pregnancy. 



Dec. 17. . .No signs of pregnancy. 



Feb. 6. . .No signs of pregnancy. 



Feb. 20. . .No signs of pregnancy. 



Feb. 22. . . No signs of pregnancy. 



Feb. 27. . .Uterus congested; very evidently pregnant. 



Feb. 27. . Uterus very much congested, but foeti not distinguishable. 



Feb. 27. . Uterus very much congested, but foeti not distinguishable. 



Mar, 6. . .Uterus very much congested, but foeti not distinguishable. 



Mar. 7. . .Three foeti in one horn of uterus, two in the other; scarcely dis- 

 tinguishable. 



Mar. 8. . Pregnant. Number of foeti probably four; scarcely distinguish- 

 able. 



Mar. 8. . .Two foeti in each horn of the uterus; very small. 



Mar. 8. . . Pregnant, but number of foeti not distinguishable. 



Mar. 18. . .Pregnant, but number of foeti not distinguishable. 



Mar. 22. . .Pregnant, but number of foeti not distinguishable. 



Mar. 26. . Pregnant, but number of foeti not distinguishable. 



Mar. 29. . .Pregnant, but number of foeti not distinguishable. 



Mar. 30. . .Two foeti in each horn of the uterus; about as large as navy beans. 



Mar. 30... Two foeti in each horn of the uterus; about as large as navy beans. 



Apr. 1. . Two foeti in each horn of the uterus; a little smaller than the 

 above. 



Apr. 2 . . One foetus in right horn of the uterus, two in the left; size of 

 hulled peanut. 



Apr. 8. . Indications that the young had been recently born. 



Apr. 9. . .Two foeti in each horn of uterus; size of navy bean. 



Apr. 10 ..Indications that the young had been recently born; milk in 

 glands. 



Apr. 11. . Three foeti; size of small navy bean. 



Apr. 13. . . Four foeti; quite small, but easily distinguishable. 



