1908.] W. MichaeIySEN : Oligochœta of the Indian Empire and Ceylon. 233 



completely developed, the developed setse being probably lost during the copulatory 

 act. The distal end was not yet hardened, but formed a long soft cap bent in the 

 shape of a hook at the distal tip. The distal portion of the hardened part of the seta 

 was ornamented by rather densely crowded transverse rows of small teeth ; the rows 

 are mostly somewhat curved outwards. 



• Spermathecae (fig. 54): Main pouch irregularly sac-like, with a very short 

 and narrow duct. Into the duct opens a single broad, fan-shaped diverticulum, the 

 free edge of which shows a number of notches, the intermediate protuberances being 

 formed by the projecting gobular seminal chambers, ca. 7 — 9 in number. 



Hab. — Bengal, Comilla in the Chittagong district; Major A. R. S. 

 ANDERSON leg. 



EUTYPHOEUS KHANI, M1CHI.SN. 



(Plate xiv, figs. 62, 63.) 

 E. k., xMICHAElvSEN, in Mt. Mus. Hamburg, xxiv, p. 182, f. 26. 



Examined two specimens, one of which was rather smaller, apparently only half 

 mature. • 



External Characters. — Dimensions of the larger specimen : L^ength 185 

 mm., thickness 4 — 5| mm., number of segments about 225. 



Colour dorsally brownish to violet-grey, ventrally yellowish grey. 



Head epilobous ? 



Setae moderately large, all at the ventral side of the body, the median dorsal dis- 

 tance being larger than half the circumference {dd = csi. fu). Setae paired but not 

 strictly, the distance between the setae of the ventral pair somewhat smaller than that 

 between the lateral, and this somewhat smaller than the median lateral distances; 

 difference in the postclitellar region the greatest, at the hinder end of the body 

 the smallest {ab<cd<bc, ab: be: cd=^: 5: 4 and 4: 5 : 4^ respectively). Median 

 ventral distance at the anteclitellar region smaller than the middle lateral distances, in 

 the postclitellar region larger {aa =| — foe). 



Dorsal pores present but inconspicuous. 



Clitellum ring-shaped, occupying the segments |- of 13 — 17 (==4j). 



Male pores on the 17th segment in the lines of setae a ox a. little closer together. 

 They are represented by small grooves at the lateral borders of a somewhat depressed 

 arc ; this male area is surrounded laterally and behind by a semicircular, broad 

 swelHng of the body- wall. 



Female pores just in front of the setae a of the 14th segment. 



Spermathecal pores one pair in the intersegmental furrow 7-8 in the lines 

 of setae a, if not closer together. The median ventral part of segments 7 and 8 is 

 swollen as far as the lines of setae b, to form two broad, not distinctly bordered walls 

 which comprehend the inconspicuous spermathecal pores. 



Copulatory organs: Ventrally on the intersegmental furrow 15-16 there is a 

 pair of great, broadly oval, nearly circular areas surrounded by a well-marked, narrow 



