30 



ACANTHODRILIDAE. 



* Benhamia annae n. sp. (Java). 



* „ floresiana n. sp. (Flores, Sumatra). 



* „ malayana n. sp. (Sumatra, Celebes, Flores). 



Ueochaetidae. 

 *Pontoscolex corethrurus Fr. Müll. (Java, Sumatra, Nias, Celebes, Sangir?). 



Geoscolecidae. 



* Glyphidrilus iceberi n. g. and sp. (Java, Sumatra, Celebes, Flores). 

 *Annadrilus quadrangulus n. g. and sp. (Sumatra). 



Cryptodrilidae. 

 Cryptodrilus insularis Rosa (Aroe-isles). 



MONILIGASTRIDAE. 



Moniligaster koutenii Horst (Sumatra). 



* „ sp. (Flores). 

 *Desmogaster sp. (Sumatra). 



From the foregoing list we learn, that Prof. Weber collected 21 

 species of earthworms, referable to 9 genera. Among them there 

 are 2 new genera and 8 new species (3 are dubious). 



As could be expected, the greatest number of species (10) belongs 

 to the genus Perichaeta, which appears to be a predominant type in 

 the Malay Archipelago. In that respect the Malayan fauna also goes 

 with the fauna of India, in which country Bourne asserts to have 

 met with no less than 67 species of Perichaeta. Though some few 

 Pm'cAaeta-species are found in the Neotropical , Aethiopian and Austra- 

 lian regions, I believe that the true Perichaeta'^ are specially charac- 

 teristic for the Oriental region. In Japan, which belongs to the 

 Palaearctic region , some species of Perichaeta appear to be indigenous ; 

 but it is known that in regard to its fauna of freshwater fishes and 

 land- and fresh- water mollusca this country also agrees with the Indian 

 continent. As to the Perichaetidae, recorded from Australia, I think a 

 great deal of them, after a careful examination, will prove to be no 

 true Perichaeta 1 ^,. 



The agreement between the Malayan and Indian fauna is also 

 confirmed by the presence of the genera Moniligaster, Desmogaster 



