94 



TWO ]:^EW AUSTRALIAN PYCINOGONIDA, 



gonum gaini, but rather more nodular and having a 

 low dorsal elevation at its distal end. The second tibia 

 is peculiar. It is very short and very thick. It is also' im- 

 moveably fused with the^ tarsus. The line of union is distinct 

 but movement between the two, joints is impossible. The 

 tarsus is very small, somewhat swollen ventrally, wedge- 

 shaped, with a very limited portion visible on the dorsal 

 STirface. The ventral side of the tarsus bears a numbecr 

 of inidimentary spines. The propodus is somewhat curved 

 and tapers slightly towards the (distal end. It bears 

 ventrally a number of small spines. The terminal claw 

 is strong, blunt and slightly curved. 



Affinities. — The species certainly seem somewhat 

 closely allied to Pycnogonum gaini, Bouvier (9), from 

 the Antarctic, but differ's from it in having three dorsal 

 eminences instead of four, in the shape of the proboscis 

 and ocular tubercle, and in the proportions pf the joints 

 of the legs, especially in the shortness of the s.econd 

 tibia. 



Occurrence.- — Port Arthur (South Eastern Tasmania) 

 in shallow water entangled in the spines of an echinoid 

 (undetermined); collected by Mr. E. Mawle. TWo 

 specimens were collected, both females, one (the holotype) 



