MOEPHOLOGT OF THE OWLS. 271 



|'3. Scops. 

 Genus p'. Ninox. 



[5. SCELOGLAUX. 



a. Vertical axis of the external car equal to the horizontal axis of the 



eyelid ; interramal joined to ramal area by a broad expansion from the 

 gape backwards; mandibular area extending backwards bcliiud tlie 

 jaw 1. Scops leucotis. 



b. Vertical axis of the external aperture of the ear half the horizontal axis 



of the eyelid ; interramal joined to ramal area behind the level of the 

 gape by a narrow branch running obliquely backwards ; ramal area 

 narrow, not extending backwards beyond the level of the jaw ; lateral 

 neck-folds and oblique retractor ; eyelids with a pectinated edge , . . 2. Scops (/lu. 



c. Vertical axis of the external aperture of the ear nearly equal to the 



horizontal axis of the eyelid 3. Ninox nnva-zealandice. 



d. Vertical axis of the external aperture of the ear equal to the horizontal axis 



of the eyelid ; interramal area broad, expanding to merge with tlie 

 mandibular area at the gape ; arms of the interscapular fork long, 

 arising high up ; stem of lumbar fork very wide, arms short, closely 

 approximated, expanding distally ; inner and median branches of the 

 pt. ventraJis imperfectly defined 4. Sceloglaux albifacies. 



Genus 6. Sykmum. 



a. Vertical axis of the external aperture of the ear of the left side less than 



the horizontal axis of the eye ; that of the right side greater than this 



axis; interramal ai'ea tapering gently backwards \. S. aluco. 



b. Vertical axis of the right and left external apertures of the ear equal, and 



greater than the horizontal axis of the eyelid ; interramal fused with 



the mandibular area from the gape backwards 2. S. uralense. 



Genus 7. Nyctala. 



Vertical axis of the external ajierture of the ear twice the horizontal axis of 

 the eyelid ; loreal area nearly divided into two parts by an apterium ; 

 interscapular portion of the pt. spinalis with a barely perceptible 

 fork 1. A^, Tengmalmi. 



Genus 8. Surnia. 



Vertical axis of the external aperture of the ear equal to the horizontal 

 axis of the eyelid ; interramal merging with the ramal area from the 

 gape backwards ; lateral neck-folds with an oblique retractor . . . \. S. ulula. 



( 9. Carine. 

 Geuus< „ 



( 10. OPEOTYTO. 



a. Vertical axis of the external aperture of the ear equal to the horizontal 



axis of the eyelid. 



a'. Loreal area not divided by an apterium ; interramal joining the ramal 



area at the gape, and contracting suddenly immediately after to 



become the pt. colli venlralis ; lateral neck-folds with au oblique 



retractor . , 1. Carine noctua. 



SECOND SERIES. — ZOOLOGY, VOL. VII. 37 



