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VOL. 53. 



tion as may be seen from the figm'e here presented (fig. 123), which 

 is taken from a much older specimen than the one given of C. acutus 



Fio. 123.— Crocodylus bhombifee. i X nat. size. No. 13578. Cuba. Represents anterior por- 

 tion OF DORSAL SCUTA. 



(fig. 122). The two species may be distinguished by this character 

 alone as follows: 



a*. Dorsal scutes in two median longitudinal regular rows with an interrupted 

 and irregular row of contiguous scutes on each side of the median rows, the 

 keels of the latter being lower than the adjacent ones C. acutics. 



a'. Dorsal scutes (except anterior and posterior transverse rows) in six longi- 

 tudinal regular and adjacent rows, the keels of which are of the same 

 height C. rhombi/er. 



124 IJi 



Figs. 124-125.— Pskudemys palustris.— J x nat. size. No. 27639, U.S.N.M. CABAflAS. 



