20 



Genus CIRCUS, Lacepodc'. 

 The tarso-mctatarsus in this ^enus (fig. G) is alwaj^s elongated, 

 although there is a considerable amount of specific variation in this 

 respect; and its external trochlea is much compressed latcrallj'. 

 The tibio-tarsus is also elongated, with the distal extremity but 

 slightly expanded. 



CtrcitjS goultii, Bonaparte ^ 



The only New-Zealand species ; readily characterized by the ex- 

 treme length and slenderness of the tarso-metatarsus. 

 Hah. New Zealand. 



32345 a. The left tibio-tarsus, wanting the proximal third ; from 

 superficial deposits yielding remains of Dlnornithidce, at 

 Waingongoro, North Island. The slightness of the distal 

 expansion, characteristic of the genus, is noticeable. 



Walter Mantell Collection, PurcJiased about 1855. 



33233 a. The left tarso-metatarsus of a female, probably belonging 



{P^ff') to the same individual as the preceding specimen ; from 



Waingongoro. This specimen (fig. 6), in which the inner 



Fig. 6. 



Circus ffoiildi.— The left tarso-metatarsus ; from the superficial de|)osits 

 of New Zealand. }. 



1 M6m. de I'lnstitut, vol. iii. p. 506 (1801). 

 ^ Conspectus Avium, vol. i. p. 34 (1850). 



