214 On the Anatomy of the Radiated Fruit-Cuckoo. 



It will be noticed from these measurements that Carpo- 

 coccyx has the most modified hind limb of any of the 

 genera with which I deal. The tarso-metatarsus is relatively 

 longer in this than in the remaining genera. 



It is clear from the foregoing account of the anatomy of 

 Carpococcyx that the genus is a member of that division of 

 the family which appears to me to form a perfectly natural 

 subfamily*, and may be thus characterized: — 



Syrinx bronchial. Ventral feather-tracts bifurcate. 

 Muscle-formula ABXY + . 

 This family I term Centropodin^^ and it has repre- 

 sentatives both in the Old and in the New World. 



The two remaining subfamilies of the Cuculidae may be 

 correspondingly defined thus : — 



PnoENicopHAiNiE. — Syriux tracheo-bronchial. Ventral 



feather-tracts bifurcate. Muscle-formula ABXY + . 

 CucuLiNvE. — Syrinx tracheo-bronchial. Ventral feather- 

 tracts not bifurcate. Muscle-formula AX Y + . 

 In conclusion, it may be useful to give a definition of the 

 genus Carpococcyx for comparison with other Cuckoos : — 



Genus Carpococcyx. — Rectrices 10; remiges 18. Eu- 

 taxial. No dorsal apterion. Each half of ventral tract 

 ending in two separate uniserial tracts, which do not 

 reunite. Small intestine 24 iuches ; cseca 3 inches. 

 Large intestine 2 inches. Right lobe of liver > left. 

 Gall-bladder large. Syrinx bi'onchial, with anterior 

 bronchial rings complete. Muscle-formula of leg 

 ABXY + . Cervical vertebrae 14 ; atlas perforated for 

 odontoid process. Bibs 2r + 5B + ^'. No rudiments 

 of basipterygoid processes in skull ; pterygoids 

 straight ; ridges on palatines in contact posteriorly. 

 Nares impervious, not divided into two. 



* P. Z. S. 1885, p. 187. 



