. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 3 cm Figure 2. Dorsal view of the carapace of MCZ 134404, a 203 mm female specimen of C. siebenrocki. Solid lines indicate scute seams, dotted lines bone 3 cm Figure 3. Ventral view of C. siebenrocki (MCZ 134404). Note the shape of the anterior plastral lobe and the extent of the anterior ventral marginals. Balumuk: MCZ 134406, 139551; Boze: MCZ 134466; Dam: MCZ 119721; Dorogori: MCZ 118611; Katatai: MCZ 135397-8, 139541-2, 142496-7, AMNH , AMS 40696-7; Mawatta: MCZ 141288; Saibai: SMNS 3991-1, 3991
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 3 cm Figure 2. Dorsal view of the carapace of MCZ 134404, a 203 mm female specimen of C. siebenrocki. Solid lines indicate scute seams, dotted lines bone 3 cm Figure 3. Ventral view of C. siebenrocki (MCZ 134404). Note the shape of the anterior plastral lobe and the extent of the anterior ventral marginals. Balumuk: MCZ 134406, 139551; Boze: MCZ 134466; Dam: MCZ 119721; Dorogori: MCZ 118611; Katatai: MCZ 135397-8, 139541-2, 142496-7, AMNH , AMS 40696-7; Mawatta: MCZ 141288; Saibai: SMNS 3991-1, 3991-2; Sigabaduru: MCZ 139547-9; Togo: MCZ 134403-5, 134467-8; Waidoro: MCZ 141694. Chelodina siebenrocki Werner, 1901 Figures 1-12 Diagnosis. Chelodina siebenrocki is a medium-sized species with a roughly egg- shaped carapace, widening markedly poster- iorly but without flaring margins (Fig. 2). The carapace has no keel, is weakly domed, and has a rugose surface and thin scutes. Anterior ventral marginals4 form a very 4 We have introduced a number of terms new to the chelonological literature, especially for certain skeletal features. These terms are indicated by italics, defined in Appendix I and illustrated in Figs. 3, 4, 5, 6, 8 and 16. narrow rim between the anterior edge of the carapace and the attachment of skin from the dorsal surface of the neck, so that the ventral surface of the nuchal scute5 is wider than it is long (Fig. 3). The intergular tends to be long and narrow (Fig. 3). The anal notch is deep and usually semicircular (Fig. 3). The plastron tapers anteriorly and is moderately elongate (not as narrow and long as in Chelodina oblonga, not as wide as in Chelodina longicollis, Fig. 3). The head is long, wide and relatively flat (flatter than in C. longicollis, not as flat as 5 Zangerl (1969) suggests cervical scute be used for what most previous authors have called nuchal scute. His reasoning is to avoid confusing the scute and the underlying bone, also called nucha
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