148 ELIPHAGID^. 



Key to the Species*. 



A. Mantle uot of the same colour as the head ; 

 the crown olire-greeu or olive-yellow, the 

 back hrowu or grej'; under surface not 

 . uniform, either the throat or under tail- 

 coverts different from the back Zostehops. 



a. Throat white, not yellow, sometimes with 



a slight tinge of olive. 



a'. Smaller : wing not exceeding 2'5 

 inches ; mantle bluish grey ; ear- 

 coverts olive-green like the head . . ccendescens, p. 152. 



b'. Larger : wing 2-95 inches ; mantle and 

 back olive-brown ; ear-coverts ashy 

 grey, contrasting with olive-greenish 

 head alhigidaris, p. 154. 



b. Throat bright yellow or dull olive-yellow, 

 c'. Mantle olive-brown ; centre of breast 



and abdomen yellow tenuirostrw, p. 154. 



d'. Mantle bluish or ashy grey. 



a". Throat olive -yellow, conti'asting 

 with the breast ; abdomen white 

 tinged with yellow. 

 «'". Larger: wing S-rSincheSjbiUO'SS s^rewwa, p. 155. 

 V". Smaller: wing not exceeding 2'6 

 inches ; culmen Oo to 0"6 inch. 

 a*. Under tail-coverts yellow or 



tinged with yellow westerncnsis, p. 155. 



/)*. Under tail-coverts white vatensis, p. 158. 



b". Throat dull olive, fading off into the 

 grey of the breast; abdomen didl 

 ashy whitish inornata, p. 159. 



B. Under surface particoloured ; either the 

 throat or the under tail-coverts yellow, 

 different in colour fi-om the breast ; upper 

 sm'face entirely uniform, the mantle like 

 the back ; head and rump sometimes a 

 little brighter, but of the same tint as the 

 back. 



c. Forehead as well as sinciput orange- 



yellow, extending over the head ; rump 



golden yellow anreifrom, p. 159. 



* 111 a large genus like the present it is difBcult to arrange the species in 

 natural groups, each of wliich shall possess its owu characters and none other. 

 The student is therefore requested to examine carefully all the leading divisions 

 of the ])reseiit '■ Key,'' as some of the eharacters common to several sections are 

 qualified by minor points of difference, by which it is hoped that any species 

 of Zostcrops may be recognized without much trouble. In the case of some 

 Papuan species unknown to the author, he has been obliged to classify them 

 from Count Salvadori's work on the Bii'ds of Kew Guinea, to which he is 

 much indebted. 



Some few species which he has not seen he has not been able to place in their 

 exact positions in the '■ Key ;' so he has put them in the sections to which they 

 belong, as near as ])ossible to their apparent allies. 



