Paraperipatus keiensis n. sp. 
By 
R. Horst, (Leiden). 
During the Danish Expedition to the Kei-islands in 1922 Dr. 
Hj. Jensen collected on the „Goenoeng Daab“, Great Kei, at 
the height of about 300 m, some Peripatus-specimens, which were 
placed in my hånds for identification. They proved to belong to the 
genus Paraperipatus and, though much resembling other species of this 
genus, found in Ceram, New Britain and New Guinea, they could 
not be identified with any of the species already described. There 
are 6 females and 4 males; the largest of the females has a 
length of 48 mm, whereas the males measure from 25 to 27 mm 
in length. As in Paraperipatus novae-britanniae Will.^) the ground- 
colour of the preserved animal is on the dorsal side black, dotted 
over with some distant, irregularly spread, brown spots, due to the 
colour of the basal part of the primary papillae; however in Paraper. 
novae-britanniae these spots are arranged in four rows, one on 
each side above the bases of the legs and another row on both sides 
of the black, median dorsal tract with segmental intensifications. 
Paraper. ceramensis Muir & Kersh is also provided with such 
spots, but they are much more numerous and densely crowded 
together. The skin of the Paraper. keyensis between two succeed- 
ing pairs of legs shows 6 to 7 large, transverse folds, alternating 
with narrower ones and set with a single row of brownish (dis- 
coloured?) primary papillae and a great number of small, dark- 
coloured, accessory ones. As in the other species of the genus there 
is in the median line of the dorsum a fine, white line in the middle of 
1) Zoolog, results based on the material from New Britain, New Guinea 
etc., Part 1, 1898, pis. I —IV. 
-) Quart. Journ. Mier. Science, Vol. 53, 1909, p. 737, pp 19. 
