BY DENE B. FRY. 89 



of the carapace ; the longest plastral shield is the intergular 

 which is once-and-three-quarters as long as broad, longer 

 th«.n the pectoi'als, once-and-thrce-quarters o^s long as the 

 suture of the pectorals, almost as long as its distance from 

 the femorals ; it separates the gulars anteriorly, forming 

 the median portion of the periphery of the anterior lobe. 

 Humerals considerably larger than, the gulars. The 

 pectoral shields and their suture are slightly longer than 

 the femorals and their suture. Suture between the 

 abdominal shorter than that of any other pair of shields, 

 tw^'ce-and-one quarter in the length of the intergular. Suture 

 between the anals as long as that between the femorals. 

 Depth of body twice-and-two-thirds in the total length. 

 Soft parts, limbs and head absent. 



Measuiements in millimetres. Taken with callipers :■ — 

 Total length of cai'apace . . . . 192 mm. 



Greatest width of same . . . . . . 132 mm. 



Length of plastron, along median line.. 142mm. 

 Width of plastron, medially .. .. 72 mm. 



Described from a single specimen consisting of a 

 carapace and plastron, mostly devoid of shields. On the 

 label is the somewhat vague locality " Australia ? " 



Tyj)e : — In the Australian Museum, Sydney. Reg. 

 No. R. 6255. 



This new form combines the characters of several 

 species. The outline is nearest to that of C. expansa*, 

 but in the condition of the first vertebral and the anal 

 shields it approaches C. novce-guinece.-\ The nuchal shield 

 and contour are much the same as in C. siehenrocki%. From 

 all the species of the genus, however, it is at once dis- 

 tinguished by the remarkable intergular shield, which com- 

 pletely sejjarates the gulars anteriorly. In this character 

 and in the condition of the first vertebral shield it approaches 

 Pseudemi/dura umbrina,\\ Siebenrock. In the genus 

 Chelodina the condition exhibited by the intergular in this 

 species is approached only by C. oblonga,% in which species it 



* Boulenger :— Brit. Mas. Cat. Chel., 1889, p. 216. 

 t Boulenger : — I.e. p. 215, pis. v.-vi. 



X Werner :— Verh. Zool-bot. Ges. Wien., Vol. 51, 1901, p. 602, tab. 5. 

 II Siebenrock :—Anz. Akad. Wiss. Wien., No. 22, 1901, pi. 1., and 

 S.B. Akad. Wiss. Wien., Vol. cxvi, 1907, p. 1207, Tab. 

 § Boulenger: — I.e. p. 216. 



