350 Records of the Indian Museum. [VorL. XII, 
The prostomium is prolobous or ?zygolobous. The demarca- 
tion between the prostomium and the first segment is a shallow 
transverse valley rather than a definite fissure or groove. 
In front of the clitellum the setae are widely paired and rather 
irregular; ab is approximately equal to cd, and is half aa or less; 
aa is rather less than bc; d is dorsally situated, and dd is greater 
than either aa or bc. Behind the clitellum the setae are more 
regular, and are set at the angles of the transverse section; aa—= 
bc = 2ab = 2cd; dd is the greatest interval, and is equal to 3cd or 
nearly so. 
The clitellum extends from segment xiv, xv or xvi to xxviii or 
xxix (or xxx dorsally). 
The genital markings are of two kinds, a series of small papil- 
lae, and certain cauliflower-like excrescences. 
The papillae occur in three sets,—an anterior, on segments x 
to xii, a middle, on segments xvii to xix or on xvili and xix, anda 
posterior, on xxivtoxxvili. They are small, white, rounded eleva- 
tions on the hinder parts of the segments to which they belong ; 
sometimes, where the segments are short and swollen, they appear 
on the anterior wall of the intersegmental groove,—they may in- 
deed be almost hidden in the groove. 
In the anterior set, there is a single midventral papilla on 
segment x, a midventral and others more laterally placed on xi 
and xii. The full number of the lateral papillae here appears to 
be two on each side, symmetrically placed, one between a and 3, 
the other outside 6; some may be less definite than others, or one 
may be missing. 
The middle series of papillae (fig. 37) consists of a pair on seg- 
ment xvii,—one on each side near the middle line, internal to a; 
a similar pair, with or without one more laterally placed (outside 
b), on xviii; and six on xix, vzz., a pair near the middle line, as 
above, one on each side between a and b, and one on each side 
outside 6. There may be no papillae on xvii. 
In the posterior group also six, in the positions just described, 
appears to be the full number; but any one or more may be 
absent in one or other segment, so that the number may dwindle 
to one only (é.g. in segment xxviii in fig. 37, where the single 
papilla is one of the median pair). 
The cauliflower-like outgrowths (fig. 37) are also variable; they 
may be described in a specimen in which they were well-marked. 
Extending ventro-laterally on the left side over segments xx to 
xxiii and partly on to xxiv also is a longitudinal crest or ridge, 
natrow from side to side, uneven, folded and notched; this ridge 
is well-marked only in the extent indicated, but it is continued for- 
wards very faintly, inclining slightly dorsalwards, as far as xv or 
xiv. On the right side the ridge in segments xx to xxiii has grown 
out into a foliating tumour-like mass of numerous soft irregular 
closely apposed papillae; the ventral surface of the mass is flat and 
of triangular shape, the apex of the triangle extending inwards to 
the line a; as seen from the dorsal surface the mass is also triangu- 
