1915.| J. STEPHENSON : Indian Oligochaeta. 47 
situation a cord of cells leads downwards, apparently losing itself in or on thebody- 
wall. 
To the previous description of the spermathecal apparatus it may be added that 
there are no glands found round the end of the duct, which opens in 4/5 just below 
the level of the lateral setae. j 
Genus FRIDERICIA. 
Fridericia carmichaeli, sp. nov. 
(Plate VI, figs. 3-5.) 
-Rungneet Tea estate, 4000—5000 ft., Darjiling District ; ii-iii, 1914. Thirteen specimens. 
The average length was about 15 mm., breadih 4 mm.; 64 segments were counted 
in one of the specimens. 
The prostomium is rounded, more or less semicircular in shape. The first six seg- 
ments are relatively short. 3 : : 
The setae are of the ‘ Enchytraeus type’. The lateral bundles contain each two 
setae; and this was also the case in the ventral bundles of four out of five worms 
examined carefully for their setal characters. In the fifth specimen, however, the 
number of setae was mostly three per ventral bundle in front of the clitellum and two 
per bundle behind it; bundles of replacing setae, three or two, were also seen. Both 
ventral and lateral bundles are absent in segment xii. 
A head-pore is present, and also dorsal pores from segment vi onwards. 
The clitellum is only slightly marked ; it covers segments xi—xiii. The male aper- 
tuves are situated on bluntly conical papillae on segment xii at the sites of the 
missing ventral setae. | 
The internal anatomy was elucidated principally by means of sections. 
The coelomic corpuscles arelarge, oval, and granular, with a very distinct nucleus. 
There are definite aggregates of these corpuscles dorsally insegments vii, viii and ix 
(fig. 4), surrounding numbers of setal fragments; these are not chance collections, 
since they occur in the same situations in all four of the sectioned specimens; they 
are further referred to on p. 41, General Part. 
The epithelial lining of the buccal cavity is approximately cubical, and is thrown 
into folds both dorsally and ventrally, especially ventrally (fig. 3, buc. cav.). The 
dorsal wall of the pharynx is not in these specimens marked by the flat sucker-like 
elevation, composed of tall columnar cells, which is commonly seen in sections of 
Enchytraeids; the pharynx may be described as a hemisphere with its convexity 
directed backwards, with thick wall composed of an elongated columnar epithelium, 
and a lumen opening anteriorly into the buccal cavity (fig. 3, ph) but the condition is 
probably temporary, as explained in the General Part ant.; the oesophagus begins 
from the floor of the buccal cavity in front of the pharynx. ‘The pharyngeal muscu- 
lature forms a layer behind the hemispherical projection ; especially noticeable is a 
sheet, well marked on each side of the oesophagus, at the anterior limit of segment iv, 
which passes downwards and backwards to the ventral body-wall (fig. 3, m.). Fur- 
ther remarks on the pharynx of Enchytraeids will be found on p.40. 
