KXPr,AXATION OK PLATE XXXI. 



Fitf. 1. PeriiipIitJiiilxiu^ knelreuteri, Pallas, var. ar(ie>itiliue((tt!.'<, Cuvier 

 and Valenciennes. A specimen 90 mm. long, from Sundaj- 

 Island, King Sound, North-western Australia. 



,, 2. Perioiiht]ialhiodo)i hurdarHs, Linnt'. A specimen 197 mm. long, 

 from Cooktown, Queensland. 



,, 3. heme purpiirasceuK, De Vis. Anterior portion of a specimen 

 92 mm. long, from an unknown locality. 



,, 4. Leme vionla.r, De Vis. Outline of a specimen 218 mm. long, 

 from Ripple Creek, Herbert River, Queensland. 



