42 



John B. Iverson 



Fig. 3. Typical mid-incubation crack in egg of Kinostemon baurii after 103 days incubation. 

 Oviducal egg was removed from female 26 September 1976, crack first appeared 74 days 

 later. Egg hatched after 118 days incubation. X marks top of egg. 



Natural nests with eggs in various stages of incubation were found on 

 the following dates: 8 March, 25 April, 7 May, and 20 May 1972; and 19 

 May (2), and 25 May (2) 1973. Eggs were found buried under 1-3 cm of 

 sand (5 cases) or under moist leaf litter 1 cm or less in depth. Two captive 

 turtles oviposited on 8 February and 17 February 1972, the former in 

 sand and the latter in the water of its tank. Carr (1952) reported finding 

 natural nests from April to June in sand and in piles of dead hyacinths. 

 Captive nestings were observed on 7 March, 9 June, and 19 November by 

 Lardie (1973), and on 4 June by Nicol (1970). 



EGGS, INCUBATION, AND HATCHING 



The eggs of Kinostemon baurii have been described by Einem (1956) and 

 present observations do not differ from his. Mean egg size for 114 eggs I 

 examined was 27.55 (longest diameter; Range = 22.8-32.8) by 16.63 

 (shortest diameter; Range = 13.6-19.3). Shells of 2 eggs (28.6X16.7; 

 28.6X16.8) were 0.23-0.28 mm thick at their ends (10 measurements) and 

 0.34-0.40 thick along the perimeter of their minor axes (10 measure- 

 ments). Eight eggs (X length 26.6) averaged 4.45 gm each (3.22-5.26). 



