OAPRIMULGl 



289 



In Chordeiles ' the skull is nmch upon the same plan, 

 but the maxillo-palatines meet in the middle line, and may 

 even become ankylosed. 



The skull is thus desmognathous, in fact. In C, virgi- 

 nianus, however, the bones do not meet. 



The skull of Nyctibius jamaicensis (see fig. 119), de- 

 scribed by HuxiiBY, is not widely different from that of Capri- 

 mulgus. The ligaments which unite the inner angle of the 



fmx 



Fig. 119. — Foke Part or Skull op 

 Nyctibius jamaicensis (afteb 

 Huxley). 



*, preirontal process. Otiier letters as in fig. 118. 



Fig. 120. — Skull of Steatornis 

 (after Huxley). 



palatine to the maxillo-palatines are, however, completely 

 ossified. 



In Podargus ^ the skull is completely doubly desmo- 

 gnathous. The basipterygoid processes are quite rudimentary. 

 There are two small azygous vomers. The palatines have 

 coalesced in the middle line. The lacrymal is small, if not 

 absent. 



The skull of Steatornis has been described, with figures, 



• Shufeldt, ' On the Osteology of the Troohilidse,' &c., P. Z. S. 1885, 

 p. 891. 



' Parkek, loc. cit. p. 124 (with figs, on PI. xxiii.) 



