406 



ZOOLOGY 



SECT. 



case there is 



specimen, and the coracoids (co.) are only partially visible : the 



scapulas (sc.) are slender, curved bones, and there is a U-shaped 



furcula (cL). 



The bones of the upper and fore-arm are of the normal avian 



character : only one caipal is certainly known (Fig. 1069, c.) : it 



apparently belongs to 

 the distal row, and 

 is closely applied to 

 the first and second 

 metacarpals. Three 

 digits (d. 1, 2, 3) are 

 clearly visible in one 

 of the specimens 

 that in the Berlin 

 Museum the meta- 

 carpals of which are 

 usually stated to be 

 all free, in which 

 no 

 as 



in other Birds, and 

 the hand approaches 

 the normal reptilian 

 type. The number 

 of phalanges follows 

 the usual reptilian 

 rule, two in the first 

 digit, three in the 

 second, and four in 

 the third, and the 

 ungual phalanx of 

 all three digits is 

 v i claw - shaped and 



doubtless supported 

 a horny claw. 



The remiges, like 

 the rectrices, are in a 

 wonderful state of 

 preservation (Fig. 

 1067^ and are 



FIG. 1067. Arclioeopteryx lithographica. From the \. .' /' , 



Berlin specimen, c. carpal; </. fiirciila ; co. coracoid; divisible, as USlial, 

 h. humerus; r. radius; sc. scapula ; M.ulna; I IV, digits. . primaries Or 



metacarpo-digitals, and secondaries or cubitals. The primaries 

 were probably attached to the second or to the second and third 

 of the digits just described. 



The pelvis and the hind-limb have the usual avian character. 

 The tibia and fibula are separate. The foot consists of a slender 



rm.' 



