CIIAMBERLIN: MYRIOPODA of the AUSTRALIAN REGION. 167 



some coarser striae arising obliquely or almost directly transversely froin tlie 

 anterior ends of longitudinal striae crossing the mctazouites. 



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

 shining, not at all margined. 



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

 undivided, each in the form of a plate with edges bent more or less caudatl and 

 so producing a caudal groove; from cctal edge arises a digitiform process as 

 in Amastigogonus tasmanianus 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 mesal 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. The 

 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.' 



Locality. — W.Australia: Albany.^ 



448. Atelomastix nigrescens Attems. 

 Fauna sudw. Austr., 1911, 3, p. 195, fig. 81-84.1 



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



449. Samichus decoratus Attems. 

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

 Locality. — W. Australia: Torbay.^ 



450. Amastigogonus tasmanianus Brolemann. 

 Records Austr. mus., 1913, 10, p. 153, fig. 32-37.1 

 Locality. — Tasmania.^ 



Nesocambala, gen. nov. 



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

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



