G. R. Wieland—On Marine Turtles. 341 



Measurements of Carapace and Plastron of Toxochelys JBauri. 



(Yale Museum accession list 2823. Elements disarticulated 

 and more or less altered in form by crushing in matrix. 

 Recovered portions as shown in the accompanying figure 6 by 

 the stippled surfaces.) 



Length of carapace (estimated to within 1 or 2 cm 53 cm 



Breadth of carapace (greatest, as measured across the 



anterior end of the 6th neural) ' 40 + 



(o) (6) 



Exact length Width measured 

 on outer edge at notch of the 

 of carapace, hornshield sulci. 



Nuchal 12-0 



1st marginal 6*0 2 -5 



2d " . — . 5-0 2-5 



3d " 5-9 2-8 



4th " _.- 6-0 



5th " 6-5 2-8 



6th " 70 3-3 



7th " 1'5 



8th " 8-0 4-5 



9th " 7-5 4-5 



10th " 7*0 4-5 



11th " 6-8 4-5 



Pygal 7-0 4-5 



(The thickness and transverse sections of the marginals are 

 approximately the same as in Lytoloma angusta. Owing to the 

 crushing undergone by most of the marginals a closer approxi- 

 mation cannot readily be given.) 



Length on Greatest 



Median line. width. 



Nuchal 5-5 • 14-5 



1st neural- 3*8 3-8 



2d " : 4-4 3-7 



3d " 4-4 4-0 



4th " ._■ ....:_ 46 4-4 



5th " 3-4 4-5 



6th " . 5'0 4-0 



7th " ._. 40 3*8 



8th " 2-5 3-5 



9th " 1-5 ' 3-5 



(10th) a _ 2-5 3-4 



Antero-pygal __ , 4*5 5*9 



(Postero-pygal).__ (3-5) (4*0) 



Marginalo-pygal . _ 4 *5 6*5 



Am. Jour. Sci. — Fourth Series, Vol. XX, No. 119. — November, 1905. 

 24 



