58 Annals of the South African Mtt. \ciini. 



broadened, ca. 40 /^ broad, ending in a rounded and a little thickened 

 edge, somewhat hollowed at one side. Distal part at the flat side 

 occupied by irregularly scattered small triangular spinelets which 

 are placed each at the proximal end of a small scar. 



Spermathecae : Ampulla pear-shaped, duct about as long as the 

 ampulla, thin, tubular. Into the distal end of the duct there opens 

 at the fore-side a diverticulum, which has the shape of a forked tube ; 

 the diverticulum is strongly bent and closely applied to the duct of 

 the ampulla. 



CHILOTA KNYSNANUS, n. sp. 



1897. ? Acanthodrilus sclatcri, part ?, Beddard in P. Zool. Soc., 



London, 1897, p. 342. 

 1897. ? Chilota sclatcri, part ?, Michaelsen in Tierreich, x., p. 148. 



LOG. Knysna forest (types of Acanthodrilus sclateri ?). 



External Characters. Length 52 mm., thickness 1-1J mm., 

 number of segments 85. 



Head epilobous (ca. f). 



Setae of the dorsal pairs at the hinder end and at the middle 

 segments of the anteclitellar part of the body much enlarged, con- 

 siderably larger than the ventral setae of the same segments. Setae 

 ventrally more or less widely paired, dorsally separated. At the 

 middle part of the body aa : ab : be : cd == 3 : 2 : 3 : 3 ; at the hinder 

 end aa : ab : be : cd = 3 : 2 : 5 : 5, at the 8 segment aa : ab : be : cd = 

 3:2:5:4. 



Nephridial pores in the lines of the setae c. 



Prostate pores in b. 



Seminal furrows somewhat bent, laterally convex, passing the 

 18 segment laterally from the setae ab. 



Spermathecal pores in b. 



Internal Anatomy. Alimentary tract : A very small gizzard in 

 front of the male organs. No calciferous glands. 



Male organs : Prostates small, irregularly coiled. Penial setae 

 ca. 0'75 mm. long, and proximally ca. 25 p thick, at the distal end 

 10 p thick, strongly bent in the distal half, whip-like or like a cork- 

 screw; distal end a little flattened, but not much ; no ornamentation. 



Spermathecae : Ampulla thickly pear-shaped ; duct short, thinner 

 distally than proximally. Into the proximal part of the duct open 

 two thick and unstalked diverticula which have the appearance of 

 sac- like protuberances of the duct. The diverticula are provided 

 with a large number of very small seminal chambers which are not 

 perfectly separated from the central lumen of the diverticulum. 



