952 NOTES ON AUSTRALIAN EARTHWORMS, 



Setae shorter than in Digaster, from •28- , 35 mm. long, the im- 

 bedded portion stouter, with a slight enlargement about the 

 middle ; in 8 rows, forming four couples, two ventral and two 

 lateral, the setae of the latter twice as far apart as they are 

 in the ventral couples. Male pores two, each on a small papilla 

 in the enlarged ends of a dumb-bell-shaped depression with 

 raised rims on xviii, nearly corresponding with the intervals 

 between the setae of the inner couples ; oviducal pores on the 

 ventral surface of xiv, in front and ventrad of the first seta on each 

 side ; spermathecal apertures four, a pair on a slight eminence on 

 the anterior margins of vin and ix, just dorsad of the innermost 

 setae, those of each pair the same distance apart. The accessory 

 copulatory organs consist of two pairs of dumb-bell-shaped adhesive 

 discs situated within two nearly elliptical areas on the junctions of 

 xi and xii, and xn and xiii ; on xviii just on the outer side of each 

 of the papillae carrying the male pores is a second small papilla 

 carrying a pore. The dorsal pores are not distinct in front of the 

 clitellum. 



The alimentary canal comprises a muscular pharynx occupying 

 about three segments ; a short oesophagus ; a large gizzard between 

 the mesenteries of v (or vi) ; a small intestine extending back to xiv, 

 which in segments ix to xiii is provided with five pairs of large 

 pouch-like diverticula (calciferous glands), very richly supplied 

 with vessels ; and a large intestine commencing in xv. In v and vi 

 are two large aborescent stalked masses probably salivary glands. 



The genitalia comprise two pairs of racemose testes in xi and xii, 

 attached to the anterior mesenteries ; two pairs of small ciliated 

 rosettes lying free in x and xi, the posterior portions of the vasa 

 joining the prostatic ducts close up to the prostates, which occupy 

 segments xix or xx to xxiv on each side ; the genital ducts which 

 come off from the anterior ends of the prostates but very soon 

 bend inwards, are very long, thick, and convoluted or bent ; a 

 pair of ovaries in the usual situation in xiii ; two oviducts 

 commencing in the same segment and opening by separate pores 

 on xiv ; and two pairs of spermathecae in vin and ix, opening 

 anteriorly. Each spermatheca consists of three portions, a distal 



