Flying Lizards — Fterodactyles. 



Flying- 

 liizards. 



Wall-case, 

 No. 1. 



one of tlic fingers of the hand was enormously elongated to give 

 support to the wing-nienibi'ane (patagiuvi), which was attached 

 to the sides of the body, the ai-m, and the long finger, and also 

 to the hind-limb and tail. The other fingers of the hand were 

 free and furnished with claws. The wing-membrane appears 

 to have resembled that of the Bat, being destitute of feathers. 

 The caudal sei-ies of vertebi-is in some genera (as in Rliampho- 

 rhyncJius) was gi'eatly elongated and stiffened with slender 



Fig. 2.— The nearly entire skeleton of Ptercnlocti/h'S spedabilU (Meyer), from the 

 LithoKr;iphic Stone, Upper Jurassic, Eiclistadt, Bavaria, a is the pubis; on the 

 right side the ilium is exposed (figured nat. size;. 



ossified fibres (Figs. 1 and 5). The bones were pneumatic (i.e., 

 filled with large air-cavities), the walls of the bones being very 

 thin, and their substance very hard and compact, thus combining 

 strength with lightness. 



Numei-ous remains of nearly perfect Fterodactyles, with both 

 long and short tails, and varying greatly in size, have been 



