Birds of Northern Formosa. 363 



20. EUTICILLA AUROREA (Pall.). 



Common during winter at Hobe. 



21. Phylloscopus borealis (Bias.). 



One specimen shot near Hohe out of a party on 6tli 

 January. The underparts have a strong wash of yellow. 

 Wing 2"'4, bastard primary 0"*4. 



The fact of a flock of these Willow-Warblers being found 

 in Northern Formosa in the depth of winter leads one to 

 suppose that this species is a regular winter visitant to the 

 island. The only other Willow-Warbler seen by me in 

 Northern Formosa was believed at the time to be P. super- 

 ciliosus. The calls of sundry Willow- Warblei's were heard 

 on several occasions during the sjoring, but the birds them- 

 selves were not seen. 



22. Cettia canturiens (Swinh.). 



These birds seem to be common during winter in the 

 Tamsui district. There were a great many to be seen or 

 heard during March at Hobe^ and they disappeared towards 

 the end of April. On the big banyans that overhang the 

 village at Hobe they could be seen every day^ and in April 

 the loud note of this bird was constantly heard from among 

 the brushwood. The call sounds like '^koloko-wichit" or 

 " kolo-olo-olo-wichit-chit.'^ 



All the examples collected in winter and spring proved on 

 dissection to be males. 



23. Cettia minuta (Swinh.). 



Three specimens collected during the winter. I have gene- 

 rally seen these birds in the company of C canturiens. At 

 Hobe they were rare, but near Tokoham, during January, 

 they appeared to be plentiful, and two or three were often 

 seen hunting together among the brushwood. 



24. HoRORNis SQUAMiCEPS Swiuh. 



Two shot on 28th October and 2nd December. One was 

 flitting about the top branches of a tall bush in a wood, and 

 the other was busy hunting on the ground under bushes. 



