On ihe Southern Snupplaij-Turtle. 49 



is dark, and there is u short eyebrow formed of dark stiff 

 hairs above the front corner of the eye. 



'I'he front foot or hand differs from that of its only ally in 

 having a mucii sliorter fifth finger, which only just passes the 

 first joint of the lon^ fourth fini^er. 



The skull is readily distinguished from that of A. calibar- 

 ensis by its narrowness and fine moulding. The snout is very 

 sharp and the orbits closer together. The premuxillai are 

 extraordinarily developed and project in front of the incisors 

 more than the length of the diameter of the narial opening. 

 The incisive foramina are very small. The angle of the 

 lower jaw is cut short off, the condylar process clearly pro- 

 jecting beyond it posteriorly. 



Type ((^) no. 1. 11. 21. 3 in tlie British Mu-^eum. 



Collected by G. L. Bates, 16ih April, 1901, "50 miles up 

 the BfMiito River, among hills of 500 to 1000 feet above sea- 

 level" {G. L. B.). 



Measurements taken in the flesh : — 



Head and body 270 millim. ; tail 18; hind foot 38; 

 ear 30. 



The skull is unfortunattdy niucli damaged ; it is that of an 

 animal arrived at maturity, but with the teetli little worn, 

 having long pointed cusps. In all essential characters the 

 teeth agree with those of A. calibarensis. 



A female of A. calibarensis in alcohol, presented to the 

 British Museum by Miss Kingsley, shows three pairs of 

 niamniie on the breast — postaxial, pectoral, and abdominal ; 

 the hindermost pair only slightly further removed from the 

 middle pair th;in these are from the frorit pair. The clitoris 

 is long and penis-like, measuring 10 millim. in length : the 

 clearly separated vagina has a cross-opening about 9 millim. 

 in width, somewhat lunate in form (the convex side towards 

 the anus, which is unusually far removed) ; the edges are 

 exceedingly thin and overhanging, partly closing over a wide 

 antechamber containing the more delicate parts. 



1 am not aware that the female of PeroJicticus has yet 

 been examined. 



IX. — On the Southern Snapping- Turtle (Chelydra Ros- 

 signonii, Bocourt). By (Jr. A. Boulenger, F.R.S. 



The late Professor Peters was the first to make known, in 

 1862, the occurrence of a Snajjping-Turtle in Ecuador. This 

 record is based on a young specimen from near Guayaquil 

 Ann. dt ^fa(/. X. I list, Ser. 7. To/, ix. 4 



