274 Proceedings of the Royal Physical Society. 



50. AUurus tetraedrus, Sav. K, N'., A. 



51. AUurus duhius, Mich. Germany. 



52. AUurus hercynius, Midi. Germany. 



The species of Allolohophora and Lumbricus, which are 

 given in the above lists as occurring in the Palsearctic and 

 Nearctic regions, require some explanation. 



In the first place, I have omitted the synonyms. This 

 was done advisedly, as the present paper does not profess to 

 be a revision of the two genera. In the second place, I 

 have accepted, without discussion, Rosa's names so far as 

 possible. But in doing this, I do not necessarily imply that 

 in my opinion Rosa's names are better founded than those of, 

 for example, Vejdovsky. Confining myself to one natural- 

 ist's nomenclature, I select that of Rosa because it happens 

 to be more familiar to me. As my purpose is that of com- 

 paring the earthworms of different countries, the question of 

 names is obviously of no moment so long as the same name 

 is applied to the same species. The above list is, I am 

 aware, incomplete ; but as there is some doubt about many 

 species, I do not see any advantage in mentioning a number 

 of more or less dubious names.^ 



V. Oriental Region, 0. 



1. Moniligaster deshayesi,- E. P. 



2. Moniligaster Barwelli, F. E. B. Manila. 



3. Moniligaster minutus, Bourne. India. 



4. Moniligaster sapphirinoides, Bourne. India. 



5. Mo7iiligaster grandis, Bourne. India. 



6. Moniligaster iiniquus, Bourne. India. 



7. Moniligaster rohustus, Bourne. India. 



8. Moniligaster papillatus, Bourne. India. 



I must, liowever, refer to two remarkable types recently described by 

 Levinsen (Om to nye Regnorraslaegten fra iEgypten— Vid. Medd. iiat. For. 

 Kjobenhaven, 1889), viz., Siphonogastcr cegyptiacus and Digiiihranchus niloti- 

 cas. The latter is possibly Alma nilotka. Their afFinities are uncertain. 



^ Whether these two species are really distinct from each other or from 

 some of those described by Bourne (On Indian Earthworms, etc. — P. Z. S., 1886, 

 pp. 662-672) is uncertain. Horst's Moniligaster Hoiikni (Descriptions of 

 Kartliworms, No. I.— Notes Leyd. Mus., i.\'., p. 97) may turn out also to be 

 identical with one of Bourne's species. 



