Manchester Memoirs, Vol. xlvii. (1903), ^(>- 5- 3 



referred to known families, as well as one or two proble- 

 matic forms of unknown affinities. In addition to these, 

 three or four species had been described from the 

 Australian coasts. 



Since the publication of Lang's monograph, Wood- 

 worth has described three interesting new forms from the 

 Barrier Reef of Australia [7], whilst von Plehn [4] has 

 recorded a number of new species from the Pacific coasts 

 of South America, as well as the previously known 

 Planocera pellucida and Pseudoceros super bus, the latter 

 from the Galapagos Islands. 



It is, then, not a little remarkable to find amongst the 

 few specimens collected by Mr. Gardiner that one, from 

 Funafuti, is apparently identical with my Leptoplana 

 pardalis described from the Maldives, and that another, 

 from Rotuma, is Pericelis by er ley ana, referred to above. 



Of the other species, Paraplanocera rotumanensis and 

 Latocestus pacificus are the most interesting. For the 

 former I have created a new genus, which should include 

 the species from the Maldives that I have described as 

 Planocera langii [9]. 



Systematic List. 



Professor Haddon's collection includes the following: — 



1. Planocera, sp. 



2. Pseudoceros haddoni, sp. n. 



3. „ regalis (Haddon), sp. n. 



Dr. Gardiner's specimens belong to the following 

 species : — 



1. Paraplanocera rotumanensis, sp. n. 



2. Leptoplana pardalis. 



3. Latocestus pacificus, sp. n. 



4. Pericelis byerleyana. 



