1886.] THE HUME COLLECTION. 69 
forming a very handsome ornamentation (82. 3. 9. 5, Junkceylon). 
This race represents S. concolor, Bly.’ 
These three forms are all without any marked seasonal change of 
colour ; but in the next race, which is the original stock living in N. 
Tenasserim, an entirely different sort of ornamentation has been set 
up in the form of the assumption, during the rutting-season only, ofa 
brilliant orange-yellow back, the sides and belly still remaining dull 
grey (S. caniceps typicus, 85. 8. 1. 178). 
Further to complicate matters, the north-western yellow-bellied 
race (S. caniceps pygerythrus) has again spread southwards and 
overlapped the range of S. caniceps typicus, which, being now pro- 
vided with a highly specialized seasonal change of colour, has driven 
it to adopt a still further-development of its own form of ornamenta- 
tion, namely, the production of a dark brown stripe between the 
upper grey and the lower yellow, which shows up the latter in the 
most brilliant manner possible (S. phayrei, 85. 8. 1. 175, Thatone). 
The original grey 8. caniceps has thus, except in the unorna- 
mented summer race of var. typicus, become eutirely extinct, and 
has been replaced by its variously decorated offshoots. 
With regard to nomenclature I think it is impossible to express 
the present state of things in a binomial manner, but by using the 
following trinomials we may perhaps approach more closely to the 
truth :— 
S. CANICEPS PYGERYTHRUS’, Geof. * 
(S. blanfordi', Bly.) 
No seasonal change ; belly yellow. 
Burma and Pegu. 
S. CANICEPS PHAYRH, Bly. 
No seasonal change ; belly rich orange, with brown lateral stripes. 
Pegu and N. Tenasserim. 
S. CANICEPS GRISEIMANUs, M.-Edw. 
(S. tnornatus, Gr., S. leucopus, Gr.) 
No seasonal change. Belly pale yellow. Feet white. Black tail- 
tip nearly obsolete. 
Cambodja &e. 
2 J. A.S. B. (xxiy. p. 474, 1855), apud Blanford (J. A. 8. B. xlvii. p. 161, 
1878), who in describing the present series of Bankasun specimens belonging to 
this form says, ‘These dark olivaceous forms may perhaps be sufliciently 
distinct to constitute a local race for which Blyth’s name S. concolor may be 
retained, but they are not, I think, really separable from S. caniceps.” Anderson, 
ou the other hand, places S. concolor as a synonym of S. modestus, without any 
remark ; but pending a renewed examination of the type, I prefer to take Mr. 
Blanford’s authority, as this course enables me to ayoid giving the southern 
race a new name. 
? The full references to all these names will be found in Dr. Anderson’s 
‘Monograph,’ pp. 227-253. 
