new Species of Karthworms. 59 
inserted obliquely forwards. They form a dense matting 
over the pharynx. Veutrally the bands are separate and more 
strongly developed, The pharynx (fig. 2) occupies somites 3-7. 
Its dorsal wall is enormously developed, and tongues of 
muscles dip into the cavity and almost fit into corresponding 
depressions on the floor. The ventral wall at the level of 
the fourth segment is raised into a semilunar valve-like 
fold, whose presence is marked outside by an intucking of 
the wall. The ventral wall of the pharynx in somites 6 
and 7 is raised into vertical folds, simulating the pouch. 
The nephridia of segments 5-6 are all fused together to form 
a single median structure, closely applied to the ventral 
wall of the pharynx. They are modified into flat glandular 
bodies, in which the small nephridial cells are united to 
become large polygonal syncytial cells in the main lobes. 
They have no nephridiopores, and just behind the semilunar 
fold (segment 4) is a small aperture, which can be traced to 
these pharyngeal glands ; in a series of sections the commu- 
nicating channels lie closely adherent to the under surface 
of the pharyngeal wall. The gizzard is in segment 8, 
slightly extending into segment 9. ‘The intestine commences 
in segment 14. There is a typhlosole. 
Below the dorsal vessel lies a typhlosolar vessel, which runs 
up to the genital somites, where it attains the thickness of 
the superior vessel, finally entering the pharynx. The last 
heart is in segment 12. There are subintestinal and sub- 
neural vessels. A lateral vessel is present only occasionally. 
The secondary segmental sheath, in which the dorsal vessel 
is enclosed in segments 18-25, is a flat somewhat loose pouch 
filled with ccelomocytes and blood-corpuscles. I have not 
been able to make out any communication between these 
pockets and the body-cavity. 
_The nephridial system consists of a series of very large 
meganephridia, becoming most conspicuous from somites 14. 
In front they are only feebly developed—sometimes disposed 
in the form of arches over the alimentary canal, or are 
tucked under in the form of tufts. The nephrostomes are 
large club-shaped structures, in which the diameter of the 
ciliated funnel is only slightly wider than the funnel-tube. 
In segments 24-32, of the majority of examples dissected 
and examined, are found small vesicles, not unlike the 
spermatheca in the anterior somites, in close relation with 
the nephridia of these segments. he vesicles, which are 
3-4, lie in the seta-line a, 5, c, d on either side close to the 
posterior surface of septa, and are connected with the main 
lobes of the nephridia only by muscular attachments, 
