On a small collection of Birds from Mount Tengger, East Java

In January 1911 Mr. E. Jacobson spent some weeks at Nongkodjadjar on Mount Tengger, East Java, at an elevation of about 1200 m. above sea-level. Here he brought together a small collection of birdskins, 24 specimens belonging to 18 species, which he kindly presented to our Museum. The collection contains one form, a Crocopsis, that seems to be an undescribed subspecies. In the following lines an enumeration of the species is to be found; where necessary, I have referred to my list of the birds, collected by Mr. Jacobson is West Java, published in this periodical, vol. XXXII, 1910, pp. 105—166.