178 



RECORDS OF THE AUSTRALIAN MUSEUM. 



Notes on the skull of Chelonia depressa : — The single skull 

 of C depressa at my disposal belonged to the largest specimen, 

 measuring 258 m.m. along the carapace (Pis. xxi. and xxii). 

 Although this example possesses most of its adult chai'acter- 

 istics it is, of course, still a very young one. In the Museum 

 collection there are only three skulls of C. mrjdas. However, 

 Dr. H. L. Kesteven has supplemented my poor material by 

 kindly allowing me to examine the four specimens used in the 

 preparation of his paper^" on the " Anatomy of the Head of 

 the Green Turtle, Part i.. The Skull." 



Mensnrements: — The following are the measurements, in 

 millimetres, of the skull of (J. depressa and of a small specimen 

 of ('. niijthiA of approximately the same size. 



Length, to tip of supraoccipital blade 

 Width (greatest) from squamosal to squamosal 

 Width, raedianally between the oi-bits 

 Depth, at quadrate condyle ... 



Depth, from lower edge of postfrontal 

 condyle 



to quadrate 



Length of parieto-squamosal suture 



Length (greatest) of parietal 



Width (greatest) of parietal ... 



Length of fi'ontals along their suture 



Width of frontal, along the fronto-parietal suture 



Width (greatest) of frontal, at the outer-angle 



Length (greatest) of postfrontal 



Length of orbit 



Height of orbit... 



Length from orbit to posterior margin of skull 



-''■' Kestoveu— Proc. Roy. iSoc. N.S. Wales. xUv., 1910, pp. 368-400, 

 pis. xx.-xxxiii. 



