1894. 



PROCEEDINGS OF THE X ATI OX A L MUSEUM. 



A", 



57 



sparsely, but the tarsus is wholly bare. The humeral tract shows the 

 remarkable peculiarity of not reaching entirely across the shoulder, 

 but becomes almost obliterated at its anterior end. This was clearly 

 shown in all the specimens examined. In the infra mandibular region 

 the feathering is even more scattered than in AntrosiomHs, so as to 



Fig. 5. Fig. fi. 



ITEBYLOSIS OF NV<T1L)K<).MI>5 AI.BICOLL1.S MEKRll.LI. 



leave two verj- distinct and complete apteria (one on either side) and 

 a less evident one in the center. The lower cervical tract (fig. 0) is 

 very narrow and is deeply forked. The i^arapterum is not very strong, 

 and in one si^ecimen the hypopternm nearly failed altogether. In all 

 other resi)ects, however, it seems to agree with Fhalwnoptilu.s. 



Specimens examined. 



Genus CHORDEILES. 



In all of the specimens examined the primaries had been cut so tbat 

 their formula can not be given, but there were 13 secondaries. On the 

 head we see that the rictal bristles are so insignificant as to leave in 



