. Central Asiatic Expeditions of the American Museum of Natural History, under the leadership of Roy Chapman Andrews : preliminary contributions in geology, palaeontology, and zoology. Central Asiatic Expeditions (1921-1930); Scientific expeditions; Natural history; Scientific expeditions; Natural history. 1927] Schmidt, The Reptiles of Hainan 401 differences in measurements in this series, beyond the usual concavity of the plastron in males. The measurements^ of the shells of ten specimens are shown below, with the average for Fig. 1. Platysternon megacephalum, A. M. N. H. No. .3010
. Central Asiatic Expeditions of the American Museum of Natural History, under the leadership of Roy Chapman Andrews : preliminary contributions in geology, palaeontology, and zoology. Central Asiatic Expeditions (1921-1930); Scientific expeditions; Natural history; Scientific expeditions; Natural history. 1927] Schmidt, The Reptiles of Hainan 401 differences in measurements in this series, beyond the usual concavity of the plastron in males. The measurements^ of the shells of ten specimens are shown below, with the average for Fig. 1. Platysternon megacephalum, A. M. N. H. No. .30109. Head from above and from side, life size. A. M. N. H. Leng' No. ( 3arap 30108 85 30109 98 30112 110 30113 115 . 30115 134 30117 148 30118 153 30122 166 30123 176 30124 184 Avprae;e of 16 specimens 136 Breadth Greatest Length Length lRAPACE Depth Plastron Tail 71 mm. 26 mm. 64 mm. 90 mm, 81 31 76 104 85 37 85 121 90 36 93 123 105 45 101 153 100 43 118 158 114 49 125 183 114 50 125 182 125 56 140 198 129 62 139 101 43 107 146 " All of the specimens of this species were brought out of the moun- tains by a Loi. "These turtles walk with their bodies slightly raised from the ground, with their tails dragging. Two specimens were timed and made respec- tively^ 25 and 27 feet per minute on level ground covered with short grass. When at rest, they usually draw the tail up close to one side. They bite when teased, but tend to hold on rather than to snap. When tapped on one side of the shell they raise the opposite side, apparently leaning toward the annoying object, like a toad (or like a snapping turtle)." () iJn this, as in subsequent species, the length of carapace and plastron is on the median line; the breadth is the breadth, and the depth the «t vertical depth of the shell, all measurements being taken with calipers. The length of the tail is from the middle of the posterior border of the plastrou. Please note that these images are extracte
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