ON LAND-PLANARIANS FROM WEST AUSTRALIA. 693 



50. On some Land-Planarians collected in Western Australia 

 and Tasmania by Members of the British Association 

 for the Advancement of Science. By Arthur Dendy, 

 D.Sc, F.R.S., F.Z.S., Professor of Zoology in the 

 University of London (King's College). 



[Received November 3, 1915 : Read November 23, 1915.] 



Index. 



Pao:e 



Geogkaphic AL 693 



Systematic : 



Geoplana dakini sp. u 694 



Cr. flavilineata sp. n 695 



O. comitatis sp. n 696 



G. nicJioUsi sp. ii 699 



G-.flynni sp. n 701 



During the visit of the British Association to Australia in 

 1914, exceptional facilities were afforded to those members 

 who visited Western Australia and Tasmania for the collection 

 of zoological material for future investigation. In Western 

 Australia various zoological expeditions were most successfully 

 organized by Professor W. J. Dakin, and in Tasmania similar 

 excursions were admirably arranged and carried out by Pro- 

 fessor Flynn. Some of these expeditions were devoted to 

 the collection of marine animals, while on others the members 

 who took part in them had ample opportunities for the inves- 

 tigation of the terrestrial invertebrates. 



During my residence in Australia, many yeai'S ago, I had 

 already paid particular attention to a section of the terrestrial 

 fauna which I [1895 his] termed " Cryptozoic," comprising those 

 small animals, for the most part inveitebrates, which habitually 

 hide away beneath logs and stones, or under the bark of trees. 

 This faunistic assemblage includes many lizards, frogs and toads, 

 centipedes and millipedes, scorpions, spiders, Peripatus, insects 

 of many kinds — especially cockroaches — many slugs and snails, 

 a large number of land-planarians, and, more rarely, land- 

 nemertines. 



Of the Land-Planarians, the species of which are more or 

 less readily distinguished by their beautiful colour-markings, 

 I have on previous occasions described many different kinds 

 from Australia, Tasmania and New Zealand, while many 

 others have been described by Messrs. Fletcher and Hamilton, 

 Professor Baldwin Spencer and Mr. Thomas Steel. It was 

 naturall}^, therefoi-e, a great pleasure to have the opportunity 

 of returning once more to my old pursuits and collecting again 

 species that were long ago more or less familiar to me. In 

 addition to these, however, several hitherto undescribed forms 



