22 BIRDS OF THE HAWAIIAN GROUP. 



ranging form in suitable localities, North America southwards. Hawaiian Islands. 

 The following table of measurements are from specimens in the Museum : 



Males. Females. 



Adult. Adult, Juvenile. Adult. Adult. Juvenile. 



Wing 12.50 12.10 11.60 ..•• 12.50 12.00 11.50 



Tail 4.60. 4.70 4.50 4.10 4.75 4.50 



Culmen 3,25 3.30 3.10 3.35 3.00 2.70 



Tarsus 2.95 3.05 2.85 3.05 3.00 2.72 



Middle toe 3.45 3.45 3.20 3.40 3.40 



Depth of bill .85 .95 .85 .80 .95 .82 



38. N. nycticorax naevius" (Bodd.). Black-crowned Night Heron, Aukii kohili. 



PI. XXIII., 5584, 9170. 



Order PALUl)ICOL.€.-Rails, Coots, Etc. 



Faniilv. 



First primary- longer than the seventh; wings less than 10 inches (except in 

 Porplivrio)\ toes very long and slender, with "scallops" along the side in I^itlica; tail 

 usually quite rudimentary ( Page 22. ) Rallidse. 



Family RALI^ID^. — Rails, Gallinules and Coots. 



(Jcucra. 

 a. No enlarged shield-like process extending over the front part of the head; 

 (Sub-family Ralliiuc;) middle toe and claw exceeding the length of the tarsus; sec- 

 ondaries pradlically equal to the primaries in length, or falling short of them by less 

 than the length of the hind toe and claw. 



b. Tail feathers very soft and entirely hidden at the ends by the coverts 



(Hawaii ) (Page 23.) Pen'nula. 



bb. Tail feathers not decomposed but ordinary and evident with no white 

 secondary quills, the inner toe without the claw longer than the culmen; plumage 

 variegated; wings feebl}' developed and not as long as the tarsus and toes combined. 



(Page 23.) Porzan'ula. 



aa. An enlarged frontal shield. 



C. Toes without lobes or flaps. (Sub-family Ga/Iiii/il/iur.) 



d. Nostrils oval, in a distinct nasal depression; frontal shield 

 rounded; wings nearly three times the length of the tarsus. . (Page 23.) Gallin'ula. 

 dd. Nostrils rounded; no nasal depression; plumage blue (wing- 

 coverts ordinary); primaries much longer than secondaries. . (Page 24.) Porphy'rio. 



:■ The Hawaiian .-I i(kn seeiu.s not to differ from the Auicricin sub-species by anv constant character. 



