1894. 



PROCEEDINGS OF TEE XATIONAL MUSEUM. 



563 



fers on the bead in a few details. The lower cervical tract is clearly 

 defined on the chin instead of being- indistinctly scattered, while on 

 the crown the longitudinal rows are so close together and so similar 

 that the general effect is like the uniform feathering of Speotyio. The 

 feet are fully feathered to the base of the toes and tlie latter are more 

 or less feathered above. The wiugs had been clipped but there were 

 apparently sixteen secondaries. 



Specimen cram iiiid. 



Genus A S I O . 



This geuus seems to me to show, best of all the owls I have exam- 

 ined, the typical Strigine pterylosis, and this is especially true of .4. 

 accqntrinus. The dense feathering of the anterior part of the head; 

 the apterium above the eye; the four distinct longitudinal rows on the 



Fig. 9. Fig. 10. 



PTERYLOSIS OF ASK) ACCIPITHINrS. 



crown, a pair on each side; the broad upper cervical tract rapidly nar- 

 rowing and deeply forked; the strong humeral tract and parapterum 

 on each wing; the rather weak dorsal tract indistinct at first, but clearly 

 defined posteriorly and forking to include the naked oil gland; the 

 strong femorals with numerous scattered feathers between them and 

 the dorsal; the feathering of the feet almost to the claws; the very 

 sparsely feathered infra-mandibular space; the deeply forked lower 

 cervical tract ; the very evident contour feathers on the upper outer 



