558 PTEEYLOGRAPHY OF GOATSUCKERS AND OWLS— CLARE. voL.xvn. 



the plucked bird very little trace of their presence. There is on each 

 side of the crown the usual double row of feathers running backward 

 Ironi culmen to cervical tract, and beside this, but at some distance from 

 it, two widely separated parallel longitudinal rows. A fifth row runs 

 across the extreme upper x)art of the eyelid with an outer branch down to 

 the eyelid x^roper. The upper cervical tract is very broad in C. virf/inia- 

 nus (fig. 7), but in C. texensls it is as narrow as in Anfrostomus. In C. vir- 

 ginianns the fork of tlie cervical tract is very strong, but that of the 

 dorsal tract is very indistinct, while from each side of the latter there 



Fig. 7. Fig. 8. 



PTERYLOSK OF CHORDEILES VIHGINIANUS. 



extends a V)road tract out and up over the back so as to connect very 

 slightly witli the broad humerals. In C. iexensis the dorsal tract is much 

 like Antrosio7nus, and there are no traces of the peculiar tracts, just 

 described, on the sides of the back. In both species of Chordeiles,]iow- 

 ever, the femoral tracts are normal and the feet are feathered half-way 

 down on the tarsus in front. On the lower surface (fig. 8) the two species 

 agree with Phala'tioptiJus, except that the infra-mandibular region is 

 very well feathered and the lower cervical tract, dividing very far up 

 on the throat, bears on its inner edge, close by the furcula, a very 

 noticeable branch or tooth, while the sternal tracts are remarkably 

 broad and strong. 



Sjiecimena examined. 



