364 ALFRED GIBBS BOURNE. 
Pigment absent. 
Sete 0°32 mm. long, dorsal gap 8 mm., lateral gaps 2°6 
mm., ventral gap 2°4 mm.; present on Segment 11. 
Nephridiopores. closer even than usual, to the interseg- 
mental grooves, in the direction of the outer seta rows. 
Male pores between outer and inner seta rows, papilla 
very frequently protruded (this is the character I first noted 
in M. papillatus, but it is by no means specific, and this does 
not form a distinct species). 
Oviducal pores in the direction of the inner seta rows. 
Spermathecopores in the direction of the outer seta rows 
(between setz 1 and 2). 
Septa v-vi to vitl-1x thickened. 
Gizzard in four (or five) lobes occupying Segments xvi1—xx 
(XV—XIX, XVI—XX, XVII—XxXI). 
Sperm-sacs somewhat lemon-shaped. 
Prostates teat-shaped, projecting rather backwards. 
Ovaries not enclosed. 
Spermathece pyriform and oval or lemon-shaped. 
Copulatory pouches simple. 
Habitat.—Ootacamund, Coonoor. 
Remarks.—This species and M. pellucida occur together 
and form, I believe, hybrids,—I have found so many specimens 
with an intermixture of characters,—but as I dwell at length 
below upon hybrids in the ophidioid group, it is not necessary 
to do so in connection with these species. 
M. chlorina, sp. n. 
Size, 130 mm. long, 11°5 mm. in circumference. 
Segments, 135, not annulated. 
Pigment, a little present, the worm becomes greenish when 
put in spirit. 
Setz 0'5 mm. long, dorsal gap 6 mm., lateral gaps 2 mm., 
ventral gap 15 mm. Setz absent from Segment 11. 
Nephridiopores in the direction of the outer seta rows. 
Male pores nearer outer seta rows than inner. 
Oviducal pores in the direction of the inner seta rows. 
