AVES ARDEID^. 



397 



Wing, 6.7. 



Culmen, 2.6. 



Tail, 2.5. 



Tarsus, 2.0. 



The sexes are alike in size. 



Color. — General color ashy grey, with dark green cap, back and wings 

 and chestnut striping on lower neck. 



Head : Whole top of head blackish, with a dark green gloss, the occi- 

 pital feathers prolonged and forming a pointed crest. Sides of head and 

 face pale ashy grey, interrupted by a greenish black bar below the eye, 



Fig. 209. 



Fig. 210. 



Butorides striata. P. U. O. C. 



Butorides striata. P. U. O. C. Details of 

 unfeathered portion of leg and foot. 



extending back to the vicinity of the ear-coverts, the area above it and 

 the crown being slaty grey like the rest of the sides of head and face. 

 Below this bar the sides of the cheeks are lightest, approaching white. 



Neck : Light slaty grey on upper part and sides ; below, the chin and 

 upper throat are immaculate white. The lower throat and the remainder 

 of under neck whitish, streaked with rich chestnut, which is lightest nearest 

 the body, where the feathers are long and pendant and form a small, 

 short neck plume. 



Back : The interscapular region and upper scapulars deep bottle-green, 

 margined and tipped with slaty grey and having dull white shafts. These 

 feathers are lengthened into lanceolate plumes, which extend back at least 



