THE POLYCLAD TURBELLARIANS FROM THE PHILIP- 

 PINE ISLANDS. 



By Tokio Kaburaki, 



Of the Science College, Tokyo Imperial University. 



Recently the collection of Polyclads made by Dr. Paul Bartsch of 

 the United States National Museum during the Albatross Philippine 

 Expedition has been entrusted to me for report. Small as the col- 

 lection is, it proved to be an interesting one in that it was found to 

 comprise in all 11 species, of which 4 appear to be new to science. 



The following is a list of the species dealt with in the present paper : 



ACOTYLEA. 

 Family STTLOCHIDAE. 



1. Cryptophallus bartschi, new species. 



COTYLEA. 

 Family PSEUDOCERIDAE. 



2. Thysanozoon auropunctatum Kelaart-Collingwood. 



3. Pseudoceros hancockanus (Collingwood). 



4. Pseudoceros litoralis Bock. 



5. Pseudoceros buskii (Collingwood). 



6. Pseudoceros concinnus (Collingwood). 



7. Pseudoceros rubrotentaculatus, new species. 



8. Pseudoceros philippinensis, new species. 



Family EURYLEPTIDAE. 



9. Prostheceraeus papilio (Kelaart). 



10. Prostheceraeus meleagrinus (Kelaart). 



Family DIPLOPHARYNGEATIDAE. 



11. Simpliciplana marginata, new genus and new species. 



Owing to the fact that there is only a single example of each of these 

 species, with exception of one, and also because the state of preserva- 

 tion does not permit a close study, I have now confined myself to such 

 a diagnosis of each form as shall render its future identification a 

 matter of reasonable certainty. 



60277-23 6 35 



