52 Mr. C. R. Narayan Rao on some 



new examples assigned to the genus Ghjph'idrilns, mainly 

 from Coorg and Shimoga (Mysore). Tiirough the courtesy 

 of the Director of the Zoological Survey of India, I Mas 

 enabh'd to examine in June 1918 the above forms belonging 

 to the Indian Museum, and more recently I was given the 

 opportunity of reeomparing the exanii)les of Glyphidrilus 

 with my owu material. I am thankful to the Museum 

 authorities. 



The two new species, G. varus and G. saffi-onensis, of 

 whicb there are a large number of sexually mature forms in 

 the collection, are without a trace of clitellum, puberty- 

 tubercles, and latero-ventral wing-like expansions or ridges 

 of the body-wall. Besides, the seta-distances and the size 

 of the seta; vary to an extraordinary degree in the four 

 species, and I am of opinion that these characters, which 

 are associated very largely with growth and sexual maturity, 

 cannot be relied upon as a very safe diagnostic feature. In 

 a feu important particulars the generic characters of Glyphi- 

 drilus have to be recast and written tbus : — 



Genus Glyphidrilus, Horst. 

 1900. Michaelsen, " Oligocliaeta " in ' Das Tierreich,' p. 469. 



Prostomium pro- or zygo-lobous. The first 12-22 somites 

 are circular in cross-section, hard and large ; the body 

 behind is four-cornered (in preserved specimens). Anus 

 dorsal and large, surrounded by a few extremely short 

 segments and a variable number of them in front also, are 

 marked off from the rest of the body by their shortness. 

 Setffi on the middle of body are invariably larger ; the seta- 

 distance dd = < or > aa. The clitellum, if present, is marked 

 by the possession of i)uberty-tubercles and latero-veutral 

 ridges or wing-like expansions of the body-wall. These, 

 together with the clitellum, may be absent. The position of 

 male aperture varies, is not easily made out, and is placed as 

 a rule within the clitellum. Th6 spermathccal pores, either 

 single or groups, occur in front of the male aperture, in tlie 

 intersegmental furrows from two to six somites within the 

 seta-space be. A well-developed gizzard in front of septum 8-9 

 occupying segment 8 or 7^, 8 and 9^. Calciferous glands 

 absent ; oesophageal pouches in somites 9 and ]0 may or 

 may not be present. Two ])airs of testes and funnels in 

 somites 10-11, and usually four ])airs of seminal vesicles 

 in segments 9-12. A pair of ovaiics and ovisacs in 

 segment 13. 



