AORTIC ARCHES OF BIRDS — GLENNY 



585 



Family Steatornithidae 



Carotids A-1; type A coracoid; ligamentum botalli present; ver- 

 tebrals and superficial cervicals have a short common root from the 

 common carotid artery. 



Species studied 



By Garrod 

 Steaiornis caripensis Humboldt 



By Glenny 

 Steatornis caripensis Humboldt 



Family Podargidae 



Unicarotid (see list of species below) ; coracoid artery types B, C, 

 and D (see list of species below) ; ligamentum botalli absent, or present 

 as a Imoa botalli; vertebrals and superficial cervicals arise separately, 

 for the most part, from the common carotid; an ascending oesophageal 

 artery arises from the right common carotid artery. 



In a single specimen of Podargus papuensis a patent ductus caroticus 

 was observed. This group appears to be undergoing further evolution 

 of the aortic arch system. 



Species studied 

 By Glenny 



Podargus strigoides (Latham) (B-4-s) 



(B) 

 Podargus papuensis Quoy and Gaimard 



(B-4-S) (D) 



Podargus ocellatus Quoy and Gaimard 



(B-2-d) (A/B) 

 Batrachostomus hodgsoni indochinae 



Streseraann (B-4-s) (C) 



Family Nyctibiidae 



Carotids B-4-s; type C coracoid artery; ligamentum botalli absent; 

 vertebrals and superficial cervicals arise from the common carotid 

 artery at about the same site, or may have a short common root from 

 the common carotid. 



Species studied 



By Glenny 



Nydibius griseus (Gmelin) 



Family Aegothelidae 



Carotids A-1; type D coracoid artery; ligamentum botalli absent; 

 vertebrals and superficial cervicals arise separately from the common 

 carotid arteries. 



Species studied 



By Glenny 



Aegotheles sp. (Lake Habbema, New Guinea) 



