CAPRIMULGI 



241 



efctOthmoids sure continued on to the quadrato-jugal bar by a 

 distinct ossified os uncinatum,, as in Todus, Scythrops, 

 Musopb-agidse, Piaya cay ana, Cariama, and Procellariidse. 

 The relations between the procoracoid and the clavicle vary 

 somewhat. In Podargus the process is large and reaches 



Fig. 122.— Steknum 

 OF Caprimulgus 

 (aftek Sclater). 



Fig. 123. — Sternum ov 

 Podargus (after 

 Solatee). 



Fig. 124. — Sternum 

 OF Nyctibius (after 

 Sclater). 



the clavicle ; it' is small and does not in Steatornis and 

 Caprimulgus. 



The number of cervical vertehrm varies from thirteen 

 (Chordeiles) to fifteen (Steatornis). Paeker has commented 

 upon the fact that in Steatornis the atlas, instead of being, 

 as is the rule among birds presumably allied to it, perforated 

 below for the reception of the odontoid process, is merely 

 deeply notched for the same. In Steatornis the dorsal 

 vertebrsB are opisthoccelous, as among the parrots alone 

 among probable allies. It is the rule among the Caprimulgi 

 for four ribs to reach the sternum. The sternum itself is 

 one-notched on each side in Steatornis, &c. It has four 

 foramina in ^gotheles, and is doubly not(3hed on each side 



E 



