316 DESCRIPTIONS OF EARTHWORMS, 
NOTE XLV. 
DESCRIPTIONS OF EARTHWORMS, 
BY 
Dr. R. HORST. 
NET 
On Malayan Earthworms. 
(Plate 10). 
The earthworms, described in the present paper, are 
for the greater part collected by Dr. H. ten Kate, during 
his journey in the Malay Archipelago in 1891, in the 
isles of Flores, Timor, Samao, Groot-Bastaard and Soemba. 
I added the description of some other ones from Java, 
Sumatra and Borneo, for which I am indebted to the 
kindness of dr. Vorderman, dr. J. F. van Bemmelen, dr. 
J. G. Boerlage, dr. J. Bosscha en dr. Hagen. As could 
be expected, a great number of those worms belong to 
the genus Perichaeta. Though the discrimination of the 
species of this large genus is a very difficult task, I under- 
took to add seven new species to it, bringing the total 
number of Malayan Perichaeta-species up to thirty-three. 
Perichaeta falcata n. sp. 
Two specimens, collected by dr. ten Kate at Sikka in 
East Flores. 
A rather thick, stout worm, of a yellowish brown co- 
lour. The largest specimen measures about 120 mm. in 
length. The circles of setae are disposed along a distinct, 
Notes from the Leyden Museum, Vol. XV. 
