ALC^. j561 



b. Tail composed of 14 feathers ; liuing 



of the wings mostly grey. 

 «'. Nostrils linear and situated in 



deep fossae : size larger ; wing 7- 



7-6 inches 4. Uria (part), p. 572, 



b'. Nostrils small and rounded, fossEB 



very slight : size smaller ; wing [p. 590. 



5-57 inches 5. Bbachyrhamphus, 



). Metatarsus about equal to the middle toe 

 find claw. 



c. Tail composed of 12 feathers 6. MiCRnnrA, p. 594. 



(/. Tail composed of 14 feathers 7. Synthliborhamphus, 



[p. 595. 



Subfamily II. FRATERCULIN^. 



Key to the Genera. 



I. Inner claw not different in size and 

 shape from the rest ; terminal portion 

 of the upper mandible not transversely 

 grooved. 



A. Tail composed of 14 feathers ; bill 

 moderately long, the length from gape 

 to tip much less than that of the 

 middle toe and claw. 



a. Breadth of upper mandible at base 



greater than its depth ; culmen 



rather long and nearly straight ; 



feathering on the lores distant from 



the posterior margin of the nasal 



opening by nearly the length of the 



nasal opening ; head and neck [p. 599. 



devoid of ornamental plumes 8. PxYrHORHAMPHTJS, 



b. Breadth of upper mandible at base 



about equal to its depth ; culmen 

 rather short and curved throughout, 

 the ridge rounded ; feathering on 

 the lores terminating close to the 

 posterior margin of the nasal open- 

 ing ; head and neck ornamented [p. 600. 

 with plumes 9. Simohhynchus, 



c. Breadth of upper mandible at base 



less than its depth ; culmen rather 

 short and curved throughout, the 

 ridge forming a blunt razor-edge; 

 lower mandible strongly curved 

 upward throughout and terminating 

 in an acute tip; feathering on the 

 lores distant from the posterior 

 margin of the nasal opening by 

 nearly the length of the nasal open- 

 ing ; sides of the head with orna- 

 mental plumes 10. Phaleris, p. 607. 



VOL. XXVI. 2o 



