DESCRIPTIONS OF GENERA AND SPECIES 



539 



way common among the Acanthodrilidae, opening in line of ventral setae. Setae anteriorly 

 in four pairs, the ventral setae on the first segments being a little further apart than 

 the lateral; towards the genital orifices these setae hecome more approximated. In the 

 posterior region of the body the setae of each couple are a little more separated. Dorsal 

 pores visible behind clitellum. Gizzard in V, FI ; calciferous glands absent. One pair 

 (^papillae on XX on a line with ventral setae. A pair of funnels in X. Sperm-sacs 

 in IX, XI, racemose. Penial setae much curved at extremity and ornamented with 

 numerous forwardly directed spinelets. Spermathecae apparently without diverticula, 

 but these are possibly represented by the thick circular swelling at the base of each, opening 

 in line with ventral setae. Hob. — Estancilla, Valdivia, Chili. 



(13) Acanthodrilus capensis, Beddaed. 

 A. capensis, Beddaed, P. K. Phys. Soc, 1885-6, p. 369. 



Definition. Length, about 80 mm. Setae : in the anterior region of body ventral setae 

 form a closely approximated couple, while the two lateral setae are much further apart ; 

 posteriorly (after the male generative pores) the ventral setae get further apart, but are 

 not so widely separated from each other as the lateral setae. Gixzard present ; intestine 

 begins in XVI or XVII. Male pores corresponding to interval between two ventral 

 setae, whioh latter are wanting. Sperm-duct pore to outside of ventral setae. Oviducal 

 pores in front of lower setae of ventral couples. Last heart in XIII. Spermathecae with 

 a single small diverticulum opening to outside of outermost setae of ventral couple. 

 Sperm-sacs in segments IX-XII. Penial setae beset with numerous forwardly directed 

 spinelets. Hah. — Cape Colony. 



This species is very active in its movements like Perickaeta. My original descrip- 

 tion of it is clearly inaccurate in some pai-ticulars, as I pointed out later (9). The 

 ahove probably requires revision in the location of some of the organs. In some 

 specimens examined there were a number of genital papillae ; in one as many as six 

 pairs on segments vii-xii. 



(14) Acanthodrilus kerguelarum (Geubb). 



Iiumbricus kerguelarum, Geube, MB. k. Akad. Wiss., Berlin, 1877, p. ^^o,. 

 A. kerguelarum, Michaelsen, Arch. f. Nat., 1891, p. 326. 

 A. kerguelenensis, Lankestee, Phil. Trans., vol. 168 (extra vol.), p. 264. 

 Lumbricus (Dendrobaena) kerguelarum, Vaillant, Annel^s, p. 167. 



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