new Species of Harthworms. 53 
Twelve species are now known, of which six occur in 
India. Found in close proximity of fresh water. 
The Indian examples may be recognized on the basis of 
the following characters :— 
1. Clitellum segments 17, 18-86, 41; latero- 
ventral ridge or wing-segments 27, 29- 
32, 33; puberty-tubercles three rows in 
front of the ridge; gizzard segment 8, 
slightly extending into7 ........ wel eias 
2. Clitellum segments 14, 15, 16-28, 30, 
latero-ventral ridge segments 20-25, 24; 
the ridge may be foliated into a cauliflower- 
like outgrowth; puberty-tubercles in three 
sets, an anterior on segments 10-12,a middle 
on 17, 18-19, and a posterior on 24-28 ; 
gizzard segment 7 extending into8 .... G. tuberosus, Steph. 
3. Clitellum segments 13, 14-38 ; latero-ventral 
ridge segment 25-32, 3823; puberty- 
tubercles three rows in front of ridge ; 
gizzard sezment 8 extending into anterior 
nalinoh sepment Oe ws. as ence vee. J. G. fluviatilis, Rao. 
4. Clitellum segments 14-35, 48;  latero- 
ventral ridge segments 24-82, 56, and may 
be occasionally repeated on segments 40-45 
on one or both sides; puberty-tubercles 
three or only two rows in front of ridge; 
gizzard segment 8 .....,.-.e0sseeneee G, elegans, Rao. 
. No clitellum; no puberty-tubercles; no 
latero-ventral ridge, or a feebly-marked 
one between seta-line 4c; segment on the 
middle of body as large as or larger than 
segments 7-12; gizzard spherical, seg~- 
ment 8; no esophageal pouches ........ G. rarus, Rao. 
6. No clitellum; no puberty-tubercles, no 
latero-ventral ridge; segments on the 
middle of body considerably less than half 
the width of segments 7-12; gizzard 
cylindrical in segments 73-9} ; cesophageal 
pouches in segments 9-10 .......000eeee G. saffronensis, Rao. 
G. annandalet, Mich. 
On 
Glyphidrilus fluviatilis, sp. n. 
There are more than forty large and sexually mature 
specimens in the collection, with the median row of puberty- 
tubercles ranging from 8 to 14, and their mode of occur- 
rence is very arbitrary. 
External characters—-The longest specimens measure 
270-275 mm.; circumference in the preclitellar region 
44 mm. ; width in the region of puberty-tubercles 55 mm. ; 
across the clitellar wing ] mm.; postclitellar region 4 mm. 
The anterior part of the body down to segment 16, 18 is 
round, and behind it is four-cornered; the terminal part 
of the body may be swollen or narrowed into a cone, The 
