98 
ZOOLOGY OF THE FAR EAST. 
a small and narrow white transversely elongated structure, resting on the body- wall 
throughout its length and attached at its inner end; they were situated nearer the 
posterior than the anterior limit of the segment, and occupied the middle of the 
interval between the lines of the dorsal and ventral setae,— their inner ends (as 
seen in the dissection, the lower in the natural condition) nearer to the line of the 
ventral setae than the outer ends to the dorsal setae ; the inner end of each appeared 
to correspond in position to the centre of the male papilla. 
The ovaries, large and conspicuous, are in segment xiii; funnels were doubtfully 
identified. Small ovisacs were present in xiv, depending from septum 13/14. 
There were no spermathecae. 
Remarks. The worms described above belong pretty obviously to the subfamily 
CriodriUnae of the Geoscolecidae, and within the subfamily approach nearest to the 
genus Criodrilus itself. Criodrilits however has a rudimentary gizzard, and the male 
pores open on segment xv. That the opening of the male pores on xiii in the present 
case is not an individual peculiarity is shown by the fact that both specimens mani- 
fest this character. 
Since however the male pores are far more irregular in position in the Geoscole- 
cidae than in other families, — there are a number of cases where worms are classed 
together in the same genus even though the male pores differ in position by more 
than two segments, — and since the rudimentary gizzard of Criodrilus is a matter of 
degree, I think the present species is rightly placed in that genus, to which it other- 
wise shows a close resemblance. 
As will be seen from the above description, the specimens at my disposal were 
not fully mature. 
REFERENCES TO LITERATURE. 
(1) Annandale, N. .. ''Notes on the Freshwater Fauna of India, No. V. Some 
animals found associated with Spongilla carteri in 
Calcutta." Joiirn. and Proc. As. Soc. Bengal, n.s.. Vol. 
ii, no. V, 1906. 
(2) Beddard, F. E. . . "A new branchiate Oligochaete [Branchiura sowerbyi)." 
Quart. Journ. Mic. Sci., n.s.. Vol. xxxiii, 1892. 
(3) ih. .. "On a Freshwater Annelid of the Genus Bothrioneuron 
obtained during the Skeat Expedition to the Malay 
Peninsula." Proc. Zool. Soc. Lond., Vol. i, 1901. 
(4) Benham, W. B . . "On some new species of Aquatic Oligochaeta from New 
Zealand." Proc. Zool. Soc. Lond., 1903, Vol. ii. 
(5) ib. . . " On the OHgochaeta from the Blue Lake, Mount Kosciusko." 
Rec. Austr. Mus., Vol. vi, pt. 4, 1907. 
(6) Hatai, S. . . " On Limnodrilus gotoi, n. sp." Annot. Zool. Japon., Vol. iii, 
1899 ■ 
(7) Keyl, F. . . " Beitrage zur Kenntnis von Branchiura sowerbyi Beddard." 
Zeitschr. f. wiss. Zool., Vol. cvii, 1913- 
