242 Transactions of the Society. 



America, chiefly by Daday. These will be given in the tables of 

 distribution at the end of this series of papers. Three of the six 

 species here noted are new records for South America. 



LIST OF SPECIES COLLECTED. 



In Brazil. 



Triarthra longiseta Ehr. *Notops hracliionus Ehr. var. spi- 



*T. terminalis Plate. nosus Eouss. 



Polyarthra "platyiytera Ehr. * Taphrocamjpa selenura Gosse. 



Fiircidaria forficida Ehr. 



Notes on the Species. 



Triarthra terminalis Plate (^S). — When alive, this looks very 

 much the same as T. longiseta, but the posterior seta is almost 

 quite terminal and always remains rigidly extended in the same 

 axis as the body. 



Habitat, — In the salt lagoon, Eio de Janeiro. 



Notops hrachionus Ehr. var. spinostcs Eouss. (27) (32). 

 Plate IX, fig. 9. 



I am not aware that this variety has ever been figured, so I 

 give a simple outline here, showing the characteristic hollow 

 spines. 



Habitat. — Botanic gardens, Eio de Janeiro. 



Order PLOIMA. 



LOEICATA (Part). 



Families DiASCHiziDyE, Eattulid^e, Dinocharid^., Salpinid^. 



The loricated Eotifers usually preponderate in collections made 

 by travellers abroad and brought back for study at home. This is 

 because the lorica makes identification possible even if the animals 

 are collected without the employment of any special methods of 

 narcotization and fixing, but simply put in a suitable preservative. 

 In fact it has been found that in most of the loricated families 

 they are much more easily identified when fully contracted. 

 Certain characteristic and constant features can only be seen in 

 fully contracted specimens. This is especially true of the frontal 

 margins of the lorica in the Cathypnidse, and to some extent in 

 the Brachionidse. 



