MONILIGASTER GRANDIS, A. G. B. 367 
Setz 0°5 mm. long, dorsal gap 10 mm., lateral gaps 2°4 
mm,, ventral gap 2:1 mm. 
Nephridiopores in the direction of the outer seta rows. 
Male pores midway between the outer and inner seta 
rows. 
Oviducal pores in the direction of the inner seta rows. 
Spermathecopores in the direction of the outer seta rows. 
The nephridiopores of Segment vii are just beyond (dorsal) 
the spermathecopores, and, of course, being just on the seg- 
ment and not on the intersegmental groove, just behind them. 
Septa vi-vi1 to vi11-1x very slightly thickened, v-v1 not to 
any appreciable extent. 
Gizzard in four lobes, occupying Segments xv1I—xx. 
Sperm-sacs oval, 
Prostates, flattened hemispheres, glandular in appearance. 
Ovaries enclosed, 
Spermathece pyriform to globular, 
Copulatory pouches not bilobed, but large (actually 
larger than they are, for instance, in M. grandis). 
Vascular System.—The latero-longitudinal vessels are 
connected with the hearts of Segments vi1r and 1x. No supra- 
intestinal vessel. 
Habitat.— Widely spread on the Nilgiris, 
Remarks on M. ophidioides, M. robusta, and M, sap- 
phirinaoides, 
This group of species, which I have alluded to above as the 
ophidioid group, is, as a group, well characterised. The body- 
wall is always absolutely opaque, its muscles, especially the 
longitudinal muscles at the sides of the body, are well deve- 
loped. They are all strong active worms which, when excited, 
exhibit a serpentine mode of progression ; it is almost impossible 
to keep hold of one when excited without injuring it. Owing 
to the arrangement of the longitudinal muscles the body when 
at rest is somewhat flattened, but when in active movement 
becomes quite cylindrical; the tail is always capable of becom- 
