498 



OLIGOCHAETA 



Spermathecae in viii, ix. 



Spermathecae in v-ix. 

 Spermathecae. in vii-ix. 



Spermathecae in vi-ix. 



C. 

 C. 



c. 

 c. 

 c. 

 c. 

 c. 

 c. 

 c. 

 c. 

 c. 

 c. 

 c. 

 c. 

 c. 

 c. 

 c. 

 c. 

 c. 

 c. 

 c. 



victoriensis 



obscurus 



hulmei 



insignis 



singularis 



illawarrae 



mudgeanus 



simulans 



saccarius 



pygmaeus 



camdeneusis 



dubius 



gravidis 



rusticus 



eameroni 



mediterreus 



canaliculatus 



sloanei 



tryoni 



manifestus 



fletcheri 



•■ Sperm-sacs in xii. 



► Sperm-sacs in xi, xii. 



Sperm-sacs in ix, xii. 



f Nephridia paired. 



(a) With paired nephridia. 

 (i) Cryptodrilus mediterreus, Fletchek. 

 C. mediterreus, Fletcher, Proc. Linn. Soc. N. S. W., ii (a), 1888, p. 614. 



Definition. Length, no mm,.; diameter, 5 mm,.; number of segments, 150. Prostomium 

 incomplete. Clitellum, XIII -XFII, complete. Setae of outer couples further apart than 

 cf inner. Male pores dorsad of setae 2 ; median papillae on VI-IX, a pair on X, XI, 

 and on anterior margin of XVIII, XIX, ventrad of male pores. Dorsal pores commence 

 V/VI. Gizzard in V ; caldferous glands in X-XIII ; intestine begins in XVIII. 

 Nephridia paired and alternate. Last hearts i?i XIII. Septa, VI/XIII, thickened. 

 Sperm-sacs in XI, XII ; spermathecae, VII-IX, caecum minute. Venial setae present, 

 with serrated eootremity. Hah. — Darling river, N. S. W. 

 This species difi'ers from the remaining forms which are associated with it by the 



character of their nephridia in having penial setae and in having sperm-sacs in x, xii, 



instead of ix, xii. 



