666 DR. A. G. BOURNE ON INDIAN EARTHWORMS. [Dec. 21, 
PERICHETA BIVAGINATA, Sp. nl. 
This species resembles P. /awsoni in the condition of the clitellum 
and in having separate oviducal pores. 
The clitellum extends over somites xiv., xv., xvi., and xvii., but is 
very slightly marked. 
The male pores are placed on somite xvili., they are inconspicuous ; 
there are no papillz, although special penial setze are present. 
The oviducts open separately, very near together, in somite xiv., 
ventrad of the ventral sete. 
There are three pairs of spermathece ; these are placed in somites vii., 
viij., and ix. The spermathecal pores open between somites vi. and 
vii., vii. and viii., viii. and ix., respectively. Each spermatheca pos- 
sesses a pair of small diverticula at its base. Nephridia are present in 
most somites, if not all, and are very large and present rosettes of 
tubules in certain anterior somites, I think in v., vii., and ix. The 
nephridiopores I have not observed. 
The gizzard is situated in somite vi. Intestinal czeca are absent. 
There are about 56 sete in each somite, which are arranged so as 
to leave small dorsal and ventral gaps, as in P. lawsoni. The setze 
are also present on the clitellar somites. 
There are a pair of small sacs in somite xviii. containing long, thin, 
curved, ornamented sete, as in P. armata, Beddard*. Lach sac 
contains at least 3 sete. 
Length 140 millim., circumference 8 mm.; number of somites 
162. 
Hab. Salem (about 1000 ft.), in wet ground. 
PERICHETA (PLEUROCHZTA ?) GRACILIS, sp. n. 
The clitellum extends over somites xXiv., XV., XVi., XVIl., and xviii., 
and is very well marked. 
The male pores are placed in xviii. ; there are no papille. 
The oviducts open separately, very near together, in somite xiv. 
I think that there are two pairs of spermathecz in somites viii. 
and ix., respectively, but am a little doubtful about it. 
The gizzard seemed to be in somite vii., but possibly this is a 
mistake for vi. 
There are two pairs of groups of small nephridia opening on the 
posterior edges of somites vii. and vili., respectively, a little nearer 
the ventral line than the spermathecal pores, which occur between 
somites vii. and viii., and viii. and ix., respectively. I have not 
ascertained the number of sete per somite, but there are large 
dorsal and ventral gaps. 
I have found no specially modified genital setz. 
Length 400 millim., circumference 8 mm. ; number of somites 332. 
Hab. Naduvatam, at an elevation of about 6000 feet, in very wet 
ground, 
I only obtained a single specimen of this very interesting worm, 
for which I shall make a special search on a future occasion. 
1 Ann. & Mag. Nat. Hist., Oct. 1883, p. 217. 
