2 Laidlaw, Marine Turbcl/aria from Torres Straits. 



a number of species from Malay seas, mostly from 

 Singapore, but some few from the coasts of Borneo 

 '[lo]. As he did not examine the anatomy of the re- 

 productive organs of the species described by him, it is 

 difficult in some cases to determine precisely to which 

 of Lang's genera his specimens are to be referred, or 

 whether they belong to distinct genera. It is, however, 

 possible to recognise two species of Thysanozoon ; 

 TypJdolepta byerleyajia I have identified from the Maldives, 

 and have created a new genus Pericelis for its reception [9]. 

 ■Collingwood's Elasinodes obtuswn is probably a Lepto- 

 planid ; Proceros should probably be referred to 

 Pseudoceros. The remaining species are a Eurylepta and 

 a StylocJiopsis. The former Lang refers to PseudoceroSy 

 doubtfully, and the latter to Prostheceraeus. 



Saville Kent, in his work on the Great Barrier Reef of 

 Australia [8], figures three species which were named for 

 him by von Graff These are Pseudoceros kentii, Ps. 

 diinidiatus, and Prostheceraeus flavomaculatiis. Von Plehn 

 has recorded species from Java and Sumatra [4] ; these 

 include two species of Thysanoplana ( ? = Thysa?iozoon) and 

 a new genus of Leptoplanidae with one species Senionia 

 maculata, all from Java, and a very remarkable form, the 

 type of a new family, Diplopliaryjix filifonnis, from off the 

 north coast of Sumatra. This latter belongs, however, 

 rather to the Indian Ocean fauna. 



Lastly, von Stummer-Traunfels has described three 

 new species of Thysanosoon from Amboina and two from 

 Batavia [5]. 



Our knowledge of the Pacific fauna is equally 

 fragmentary. Excluding the coasts of New Zealand, Japan, 

 China and the Philippines, from each of which one or two 

 species are known, Lang was acquainted with only eight 

 species from the Pacific Islands which could be definitely 



