9 [ Vol. xxxviil. 
series in the British Museum there is no specimen having 
anything approaching the extent of grey shown by all the 
three specimens in Mr. Herbert’s collection. A bird in the 
Tring Museum has more grey than usual, but still far less 
in extent than Mr. Herbert’s. 
Type. 3. No. 12.87.639. Herbert coll., British Museum. 
Pb iflen aN Ov, b2.87.640. ‘5 Fi 
Locality. Tang, Song Paa, Siam. 
Pomatorhinus olivaceus siamensis, subsp. nov. 
Very much darker than either P. 0. olivaceus or P. o. 
ripponi, and with a comparatively still darker tail. Dimen- 
sions the same as those of olivaceus. 
Type. g. No. 1916, 12.27.804. Herbert coll., British 
Museum. 
» ¢+ No. 1916, 12.27.805. Herbert coll., British 
Museum. 
Locality. Maprit, Siam. 
Pomatorhinus nuchalis klossi, subsp. nov. 
Differs from P. n. nuchalis in being very much darker 
and in having the flanks and sides of the neck a deeper 
richer chestnut. The upper and lower aspects of the tail 
are both almost black, and still darker in proportion to the 
back than in that bird. ‘The colour of the head is practically 
concolorous with the back, instead of beimg darker and more 
grey as in nuchal. 
Two specimens collected by Mr. C. Boden Kloss in 8.E. 
Siam agree exactly with the single female collected by 
Mr. Herbert. 
Type. 3. No. 1915, 10.14.1138. Kloss coll., British 
Museum. 
Locality. Klong Menao, Siam. 
Type. 9. No. 1916, 12.27.809. Kloss coll., British 
Museum. 
Locality. Samkok, Siam. 
Mr. Herbert?s specimen was collected at Samkok. 
I name this subspecies in honour of Mr. Boden Kloss, 
the first naturalist to obtain a specimen of it. 
