On some Perichete from the Eastern Archipelago. 69 
difficilis and distinctly green ; the metathorax also is different 
and the punctuation of the first abdominal segment very 
much closer. H. Oressonti,has the pubescence of the abdo- 
men pale fulvous and the metathorax blue-green. 
It may be added here that the altitude of Las Cruces is 
about 3800 feet, while that of Sta. Fé is 7000 feet. 
Las Cruces, New Mexico, U.S.A., 
May 2, 1895. 
XII.—On some Perichete from the Eastern Archipelago 
collected by Mr. Everett. By Frank E. Bepparp, M.A., 
F.R.S., and Sopaiz M. FEDARB. 
In the present paper we propose to describe some new species 
of Perichete from the Kast which were collected by Mr. Everett 
and kindly forwarded to one of us some months ago. 
Although there are nearly one hundred species of Pericheta 
known to science at the present time, the bulk of them being 
natives of the Oriental Region, the particular islands, viz. 
Borneo and Palawan, from which our specimens come have 
been but little investigated as regards the present group of 
animals. We were not, therefore, surprised to find that the 
majority of the species were new. In addition to the new 
species, the collection also contained the following, which 
have not been previously recorded from this part of the 
world :— 
Pontoscolex corethrurus (F. Miiller). Merabah, North 
Borneo. 
Megascolex armatus, F. EK. B. Padas Valley, North 
Borneo. 
Both these species are widely distributed forms. 
Pericheta Everetti, sp. n. 
The length of this species is about 300 millim. and the 
diameter at the widest part 12 millim. 
It has a marked reddish-purple colour dorsally. 
The clitellum occupies the segments xiv.—xvi. and is without 
ete. 
The male pores are separated by sixteen sete. 
The genital papillae are developed on segments xix.—xxl. 
There is a pair on each of these segments, long and narrow in 
