1897.] FEOM. SOUTH AFKICA. 343 



The gizzard, as in the other small species, is very slight, and as in 

 them is often hidden behind the mass of gland-cells which deck 

 the pharynx. 



There are no calciferous glands, and the large intestine begins in 

 segment xvii. 



There are but a single pair of testes and vas deferens funnels, 

 which lie in segment x. As in worms with but one pair of testes, 

 the sperm-sacs are limited to segments ix., x., xi. 



The spermathtcoi have two long tubular diverticula. 



There are penial seta;. 



(7) Acanthodrilus photodilus, n. sp. 



Ten specimens of this species were collected in Knysna Eorest, 

 " in and under rotten wood, leaves, &c." It is a moderately large 

 species, measuring 81 mm. by 31 in breadth. It is dark purple- 

 coloured. 



The prostomium is complete ; the setce are as in other Cape 

 species. 



There are no genital papilla even in fully mature examples. 

 The nephridiopores are in front of seta 3. There is a slight 

 convergence of setse at the male pore. 



The gizzard is large. The intestine begins in xvi. Septa 

 viii./Jti- are thick. 



The spennathecoi have a single lobate diverticulum. 



The sperm-sacs are in segments ix.-xi. There is but a single 

 pair of testes (?) and sperm-duct funnels in x. 



The spermiducal glands are long and coiled ; they occupy 

 several segments. The penial setce are long and not ornamented ; 

 the extremity is curved in a corkscrew fashion, 



(8) Acanthodrilus lucifuga, n. sp. 



In the same tube as that which contained the specimens 

 already described as A. photodilus was a single worm which is 

 obviously quite different. 



Its dimensions are not widely different from those of A. photo- 

 dilus, but it is a somewhat more slender worm. 



The clitellurn extends over segments xiii.-xvii. The other 

 external characters are as in the last species saving for the 

 presence of genital papillce, which are totally wanting in A. photo- 

 dilus. These papillae are median and unpaired ; they occur on each 

 of segments xi., xii., xx., xxi. 



The sperm-sacs are in ix.-xi., and associated with this is the 

 existence of only a single pair of sperm-duct funnels in x. 



The spermathecoi have the remarkable form shown in the annexed 

 drawing (fig. 2, p. 344). The pouch is roundish to oval, and 

 communicates Math the exterior by a short duct into which opens 

 a long diverticulum which is curA'ed round into a circle ; at its 

 extremity the diverticulum swells out into a globular chamber. 



The spermiducal glands are, as is by no means usually the 



