some new Species 0/ Dra\vida. 515 



On the prostomium are found numerous aggregations of 

 filiform cells in a state of uniform distribution, while at the 

 tip and the sides of the tip are found curious pyramidal cell- 

 associations, usually three in number (PI. XVII. fig. 8). 

 Their structure is identical with that of the spindle-shaped 

 cells. The apex of the pyramid points outward and the 

 sensory nerve-fibres enter the broad base. There is not any 

 vesicular investment for them, and therefore they must be 

 in the nature of primitive sensory organs, undoubtedly 

 tactile in function. 



Locality. Somavarpatana^ Coorg, 4000 ft. 



Type in the British Museum. Syntypes in Hamburg 

 Zoological Museum, in the Indian Museum, Calcutta^ and 

 iu the Central College, Bangalore. 



Draivida scandens, sp. n. 



Extei'nal Characters. — Length 30 mm. to 48 mm.; dia- 

 meter at the thickest anterior part 2 mm. and at the 

 narro^yest posterior part 1*75 mm. ; number of segments 

 115 to 145. Prostomium prolobous. 



The setse are closely paired, none on first somite. 

 aa=-bc', dd=^ circumference of body. The setse on the 

 anterior fifty somites are l-g- to If times bigger than those 

 on the hinder segments and are obliquely set. The longest 

 setae are '6 and "07 mm. at the nodule, and those from 

 the hinder parts of the l)ody measure "32 and '04 mm. at 

 nodule. The free ends of longer setse are spatulate and 

 those of the shorter set pointed, an adaptation obviously 

 connected with the scansorial habits of the worm. The base 

 of the longer seta-groups is surrounded by a circular or 

 slightly oval, discoidal, cutaneous, slightly raised marking. 



Dorsal poies are present, fairly large, commencing from 

 somites 16 or 17. Nephridial apertures large on seta-line^. 

 The clitellum is well-marked, somites 9, 10, 11, 12, and 13 

 being affected; frequently somite 14 is also involved. 



The genital markings are not elaborate and consist of an 

 elevated circular area around the male orifices. The two 

 areas may become confluent, producing a raised transverse 

 pad. Similar markings may be found around the female 

 pores. All these areas are bisected by intersegmental 

 grooves. Atrial papillae occur, and frequently show through 

 the first pair of male apertures. 



Spermathecal pores are simple, large in the intersegmental 

 furrow 7/8 on seta-line a. 



Two pairs of male apertures on seta-line ah in 9/10 



33* 



