610 
On the genus Lampribis. [Ibis, 
L. vara Rothsch., Hart., & Kleinschm., is apparently the 
less rare of the two, and was seen singly or in pairs along 
small forest-brooks or in wooded swamps. Our two speci¬ 
mens, representing both sexes, have been compared with two 
specimens from the River Muni and one from Liberia, in the 
Museum of the Philadelphia Academy of Natural Sciences. 
While these three West African birds all have the abdomen 
somewhat darker than in those from the Ituri, there seem to 
be no differences of importance between them. 
Lampribis olivacea (Du Bus) was only observed on one 
occasion, when a pair were flushed from the ground and amid 
dense undergrowth, some little distance back from the bank 
of the Ituri. Our single specimen, a male, shows no evidence 
of immaturity and measures : wing 335 mm., tail 133, 
culmen 106, bill from posterior angle of nostril 94, tarsus 70, 
middle toe with claw 69. 
From the original description and plate of Du Bus there 
seemed to be no doubt of its identification as L. o. olivacea , 
and Mr. Bannerinan's recent notes * confirm my opinion. 
Lampribis akeleyorum (Chapman) | is really the eastern 
representative of L. olivacea , being larger, with wing-coverts 
shining green (as opposed to a more coppery tinge in our A. o. 
olivacea ), and its plumage of a warmer brown tone through¬ 
out. Notwithstanding that the tips of the wings are badly 
worn, they measure 358 mm. in the male, 362 in the female. 
The specimens of Lampribis with which Dr. Chapman 
compared them, from the Philadelphia Academy of Natural 
Sciences, were really those of L. rara mentioned above, but 
wrongly labelled as L. olivacea. 
That the extent of bare skin about the face is a good 
diagnostic character in Lampribis , and not dependent upon 
age, is well shown by the downy young of L. akeleyorum , 
for the shape of the naked patches, only a few days after 
hatching, is exactly the same as that of their parents. 
* Bull. Brit. Orn. Cl. xl. 1919, p. 5. 
t Bull. Amer. Mus. Nat. Hist. xxxi. 1912, p. 235. 
