162 RF.CORPF! OF THE AUSTRALIAN MUSEUM. 



resemblance, liowever, was very strikiiiff, and oji jilacing 

 the four side by side in order of age, it became evident rliat it 

 was only an older foi-ni than the type specimen. This largest 

 specimen, about ten-and-a-half inches in length, apjtears to be 

 comparable to Garman's youngest ones, ('lidoiiia ilfjircftxit then, 

 emerges from the e^^ with each scute covered by a "'larval 

 shield " which, as the animal grows, becomes an areola almost 

 identical with that found in land tortoises ; this is finally 

 shed before the turtle reaches maturity, leaving the smooth 

 scutes described by Garnian and tigiired on Pis. xxi-xxii. As 

 far as I can ascertain these areol.ne are unique amongst mai-ine 

 turtles. 



Whilst recently at the Queensland ^[useuni in Brisbane Mr. 

 McCulloch was shown some young turtles which he recognised 

 as his Xitfafor tfi^si^Uatns. Mr. H. A. Longman iiiformed him 

 that the}' were the specimens referred to by Mr. J. Douglas 

 Ogilby^*^ as possible hybrids between Ert^fiiwcJif'Ju-t iinhrlcafa 

 and Caretta c.aretta. Later, four other specimens were f(nind, 

 and three of them were kindly forwarded to me by the 

 Director, Dr. R. Hamlyn-Hari-is, wliich, with tlie four 

 Australian ^Museum examples, make ten specimens in all. 

 Seven of these I have been able to examine, and, with mII tlicir 

 data, they are as follow : — 



Specimen 1 — (PI. xix., fig. 1 and figs. ;^9 a-b, 4-4a). 



IjOC. — Port Darwin, Northern Territory, North Aiistinlia. 

 Collected by Mr. Hugh W. Christie, Lighthouse-keeper at Point 

 Charles. This specimen is evidently just hatched, and is in 

 the Australian Museum. 



Specimen 2. 



IjOC. — New (luiiiea ? Tjent by the Queensland MiistMim, 

 Evidently just hatched. 



Specimen -i. 



Loc. — New Guinea? Lent by the Queensland Museum. 

 Slightly older than the alxne. 



SjH'cinteii 4 — (figs. 89 (•-(! and -i-ib). 



/.",-. — 'i'or'res Strait. Collected by Mr. Alex. Morton, March 

 1S7!>. Slightly oldei" than specimen No. 3. In the .Australian 

 Museum Collection. * 



1" O^ilby — Proc. Roy. Soc. t^'laiul., xix., 1905. p. 17 (footnote), Keppel 

 Bay, Queensland. 



