1922.] Collection of Sirds from AfJieen. 663 



Mr. Davison, who made a very short stay in January and 

 February 1873 on the coast of this, then rather inhospit- 

 able country ; during this stay, only about thirty species 

 were " seen " and some of them collected. Among the 

 latter was a new species, Suj/a alhigrdaris. 



Recently, however, Mr. E. Jacobson, a well-known 

 traveller and collector in the Dutch East Indies, kindly 

 called my attention to another paper in the Proceedings of 

 the U.S. Nat. Mus. vol. xxvi. no. i:518, pp. 485-523, by 

 Ch. Richmond on a collection made by Dr. Abbott in 1901, 

 in Loh-Sidoh Bay ; only seventeen specie-s are recorded 

 from this locality. 



Now^ in the year 1920, Jonkheer F. C van Heurn, a 

 Dutch gentleman residing at Medan (Deli), made a trip to 

 Lake Takengon, in the centre or thereabouts of Gajo-land 

 (Acheen). This lake, situated at an altitude of about 

 1200 m., has a length of nearly 17 km., while its greatest 

 breadth is not more than 5 km. ; it is surrounded for the 

 greater part by an extensive belt of reeds and other aquatic 

 plants. The mountains around this fine sheet of water are 

 covered with a more or less dense vegetation of conifers 

 [Pinus merkusii) . 



Mr. van Heurn visited this region in March and April 

 1920, and stayed for about tliree weeks, during which time 

 he collected examples of 57 species, none of which were 

 new or very rare. He found many caverns inhalnted by 

 incredible quantities of Swifts {Collocalia), while the water- 

 birds at this elevation proved to be of the same species as 

 those found in the coastal swamps of Sumatra. 



In the same year Mr. van Heurn collected birds in two 

 different localities at a much lower level and situated in 

 closer vicinity of the north-eastern coast, viz. at places (Kam- 

 pongs) called Alas Peurba (200 m.) and Alur Djanibu 

 (50 m.). Here he succeeded in finding a few rather rare 

 species, as the following list will show. 



Rollulus roulroul (Scop.). 



(^ . Alas Peurba, 17 September. 



