chambsrun: ictriopoda op the lustraliam region. L67 



some coarser striae :» rising obliquely or almost directly transversely from the 

 anterior ends of longitudinal striae crossing the metasonites. 

 Anal scutum covering the valves above; smooth. Valves smooth and 



shining, not at all margined. 



The posterior gonopods distinct Prom each other, with no median plate; 

 undivided, each in the form of a plate with edges bent more or [ess Caudad and 



so producing a caudal groove; From ectal edge arises a digitiform process as 

 in Anuuligogonus tasmahiantu but lower down and not extending distad as 



far as the tip of the main branch; the latter distally with several Long setae. 



In the anterior gonopods the inner ends of the tracheal stalks meet, firmly, 

 being Sutured, at the mesa! line, the ends there expanded and forming a broadly 

 triangular plate. In front of this lies a very small piece apparently represent- 

 ing the true median plate which appears to be fused with the gonopods. Tic 

 two branches of the anterior gonopods are equal in length and enclose between 

 them a cavity in which the slender pseudoflagellum lies. 



Number of segments, sixty-one and near that number. 



Diameter of male, 3.2 mm.; of female to 4.2 mm. 



447. Atelomastix albanyensis Attems. 

 Fauna siidw. Austr., 1911, 3, p. 194, fig. 73-80. 1 



Locality. — W. Australia: Albany. 1 



448. Atelomastix nigrescens Attems. 

 Fauna siidw. Austr., 1911, 3, p. 195, fig. 81-84. 1 



Locality. — W. Australia: Jarrahdale, Lunenberg. 1 



449. Samichus decoratus Attems. 

 Fauna siidw. Austr., 1911, 3, p. 198, fig. 85-91. » 

 Locality. — W. Australia: Torbay. 1 



450. Amastigogonus tasmanianus Brolemann. 

 Records Austr. mus., 1913, 10, p. 153, fig. 32-37. 1 

 Locality. — Tasmania. 1 



Nesocambala, gen. nov. 



Belonging to the group with Bagellum-bearing gonopods (Mastigo- 

 cambalinae). With five labral teeth as in Agastrophus and Hypo- 



