1918. ] H. C. Ropinson & C. B. Ktoss: Birds. 245 
Comparison of the above four specimens with a large 
series of the typical form from the Malay Peninsula enables 
one to say with some degree of certainty that when freshly 
collected specimens are compared no differences whatever can 
be detected in the tint of the upper parts. Older skins tend 
to become slightly ‘more yellowish and bronzy, even when 
protected from the light. Oberholser’s specimens from Sumatra 
were probably more recent in date than his comparative 
material from the Malay Peninsula. 
179 Arachnothera chrysogenys, Temm. 
Arachnothera chrysogenys, Temm.; Salvad., Ann. Mus. Civ. 
Gen. xiv, p. 214 (1879); Gadow, Cat. Birds Brit. Mus. ix, 
p. 108 (1884); Buttikofer, Notes Leyden Mus. ix, p. 108 (1884); 
Vorderman, Nat. Tijd. Nederl. Ind. xlix, p. 400, no. 231 (1889). 
Arachnothera chrysogenys copha, Oberholser, Smithsonian 
Misc. Coll. vol. 60, no. 7, p. 20 (1912). 
a,b. 26. Sungei Kumbang, Korincki, Sumatra, 
4,700 feet. gth April, r914. [ Nos. 763-4. | 
“Tris chestnut or chocolate, bill black, the lower mandible 
with the base pinkish and the tomia broadly yellow, feet 
brownish fleshy.” 
None of the Spider-hunters were at all common in Korin- 
chi, probably because we were rather higher than the gone in 
which Scitaminaceous plants amongst which these birds 
largely feed, reach their maximum abundance. 
These specimens probably belong to the race from Tapan- 
uli bay, N. W. Sumatra, described by Mr. Oberholser as 
Arachnothera chrysogenys copha in his paper “ Descriptions of 
one hundred and four new species and subspecies of Birds 
from the Barussan Islands and Sumatra,” cited above. His 
diagnosis ‘‘ Similar to Arachnothera chrysogenys chrysogenys from 
South Eastern Sumatra but larger, upper and lower parts darker 
and duller’’ is, however, so meagre that in the absence of speci- 
mens from S. E. Sumatra it is impossible to be certain. The 
two skins mentioned above have wings of 83 and 85 mm., 
while a series from various parts of the Malay Peninsula which 
would probably be identical with those from S. E. Sumatra 
range from 82-89 mm. 
180. Arachnothera flavigaster (Eyton). 
Anthreptes flavigaster, Eyton, P. Z. S. 1839, p. 105. 
Arachnothera flaviventris, Gadow, Cat. Birds Brit. Mus. 
1X, p. 109 (1884). 
Arachnothera flavigastey (Eyton); Buttikofer, Notes 
Leyden Mus. ix, p. 58 (1887) ; Vorderman, Nat. Tijd. Nederl. 
Ind. xlix, p. 400, no. 227 (1889); Robinson & Kloss, Ibis, 
IgiI, p. 78; Parrot, Abh. Konigl. Akad. Bayer. II, XXIV, 
Bd. I, p. 235 (1907). 
Part II: Vertebrata. 
