520 



CAPEIMTJLQID^, 



«'". Tarsu8 more or less feathered in 

 front, shorter than middle toe 

 with claw, 

 a''. Tail more or less rounded, 

 fl'. No tufts of elongated feath- 

 ers on the occiput. 

 «". Head with distinct longi- 

 tudinal, or at least with- 

 out cross marljings .... 1. 

 ¥. Head with distinct cross 



markings 2. 



/>'. Erectile tufts of elongated 



feathers on the occiput . . 3. 

 b^. Tail equal or emarginate .... 4. 

 V" . Tarsus entirely hare, as long as 

 or longer than middle toe. 

 C*. Bill behind the nostrils not so 

 broad as the length of the cul- 

 men ; nostrils not very prom- 

 inent 5. 



d^. Bill behind the nostrils as 



broad as the length of the cul- 



men ; tubular nostrils very 



conspicuously prominent . . 6. 



b' '. Wing normal in the female, but 



abnormal in the male, the first six 



primaries being equal in length, 



the seventh, eighth, and ninth 



longest, nearly or quite half an 



inch longer than the first 7. 



b'. Male with an enormously elongated 



wing-feather. 



c". First primary shorter than the 



second ; the ninth primai-y of the 



male enormously elongated, its 



shaft bare 8. 



d". First primary longer than the 

 second; seventh and eighth dis- 

 tinctly, ninth enormously elonga- 

 ted in the male, shafts never bare. 9. 



b. Some of the rectrices greatly elongated. 

 c'. Central pair of rectrices greatly elon- 

 gated ; rectrices decreasing in length 

 to the lateral ones, lateral pair 

 shortest 10. 



d'. Central and lateral pair of rectrices 

 elongated, the pair next to the 

 central shortest 11. 



e'. Lateral pair of rectrices enormouslj' 

 elongated ; rectrices decreasing in 

 length to the middle, central pair 



shortest 12. 



. Rictus without conspicuous bristles. 



c. Tail distinctly longer than half the wing. 

 /'. Tail rounded, outer pair of rectrices 



shortest. 

 e''. Some feathers on the .sides of the 

 occiput elongated, forming ear- 

 tufts ; wing much pointed 13. 



Caprimulgus, p. 52L 

 [p. 579. 

 Phal^noptilus, 



Otophanes, p. 581. 

 Stenopsis, p. 582. 



Nyctidromus, p. 587. 



SiPHONORHIS, p. 591. 



[p. 592. 

 Heleothreptus, 



[p. 594. 

 Macrodipteryx, 



COSMETORNIS, p. 595. 



Scotornis, p. 596. 

 Hydropsalls, p. 598. 



Macropsalis, p. 601. 

 Lyncorni.s, p. 003. 



