+––––––––––––––––––––––+––––––––––-+––––––––––––+––––––––––-+––––––––––-+ | Year. | Length of | Breadth of | Height of | Length of | | | carapace. | carapace. | box. | tail. | +––––––––––––––––––––––+––––––––––-+––––––––––––+––––––––––-+––––––––––-+ | | millim. | millim. | millim. | millim. | | Second | 26.5 | 25 | 12 | 16.5 | | Third | 42 | 39.5 | 17 | 17.5 | | Fourth | 51 | 49 | 21.5 | 20.5 | | Fifth | 54 | 51 | 23.5 | 21.5 | | Sixth | 59 | 56 | 25 | 23.5 | | Seventh | 66 | 60 | 26.5 | 26 | | Eighth (♂) | 72.5 | 61 | 28 | 27.5 | | Ninth (♂) | 74 | 62 | 28 | 27.5 | | Tenth (♂) | 77 | 64 | 30 | 28 | | Eleventh (♂) | 80 | 67 | 30 | 28.5 | | Fourteenth (♂) | 92 | 74.5 | 33 | 28.5 | | Twenty-fifth (♀) | 121 | 92 | 43 | 34 | | Old ♀ | 129 | 96 | 47 | 37 | | Very old ♀ | 163 | 113 | 59 | 53 | +––––––––––––––––––––––+––––––––––-+––––––––––––+––––––––––-+––––––––––-+ The size of the eggs varies considerably, from 26 by 17 to 30 by 16 millimeters; sometimes they are perfectly round, 17 mm. in diameter. _Ch. concinna._–The specific character by which this Terrapin may be easily recognised is a pair of orange-red broad streaks, which extend from above the eye to the sides of the neck. The general colour is olive-brown above, variegated with yellowish dark-edged lines, which, together with numerous rugosities, radiate from the middle field of each shield. The plastron is yellow, often with blackish symmetrical patches, and sometimes these become confluent and preponderant. Very young specimens are extremely pretty, the ground-colour of the carapace being green, each shield with darker, somewhat concentric markings, most conspicuous and regular on the upper surface of the marginals, where the marks of the adjoining shields form one pattern-system across the dividing lines. The plastron is either uniform yellow or has a few pairs of blackish spots {350}which stand so closely together that they form almost median patches. The carapace is rough. The horny shields become very thin with age. The anterior margin of the small nuchal and the neighbouring marginals is faintly serrated. The posterior marginals form slight notches or indentations between their edges. The plastron is almost square behind. The edges of the jaws are nearly smooth, without hook and receiving-notch. The tail is short.