ON THE DIPTERA OF THE FLANNAN ISLANDS 219 



7. Tipula paludosa, Mg. Two females. A common and univer- 



sally distributed species. 



8. Sytnpycnits annulipes, Mg. Two specimens. The only represen- 



tative of the Brachycera obtained by Mr. Clarke. 



9. Syrphus corolla, F. Two males. 



10. Syrphus luniger, Mg. Two females. Both species of Syrphus 



are of general occurrence. 



11. Cynomvia mortuonun, L. Seven males and three females. 



Evidently an abundant species on the islands. 



1 2. Musca domestica, L. The Common House-Fly. One male 



and four females. 



13. Calliplwra erythrocephala, Mg. The Common Blow- Fly or 



Blue-Bottle. Fourteen males and ten females. 



14. Euphoria cornicina, F. Twelve males and eleven females. A 



very common and universally distributed species of " Green- 

 Bottle." 



15. Spilogaster duplicata, Mg. Two females. 



1 6. Spilogaster sp. A female specimen belonging to this genus is 



probably the most interesting Fly in the collection. It is a 

 large one, with conspicuous spots on the abdomen, and 

 quite unlike anything known to me. It is unfortunate that 

 only one example was obtained, as it may represent a very 

 rare or even a new species. 



17. Hydrottza irritans, Fin. A single female of this well-named 



Anthomyiid. Probably common on the islands. 



1 8. Anthomyia sulriventris, Ztt. Six males and eighteen females. 



The latter sex was previously unknown to me, but after a 

 careful examination and comparison with the male I have 

 no hesitation in assigning these eighteen well-preserved 

 females to this species. They will be useful eventually for 

 description. 



19. Phorbia florilega, Ztt. Nine males and twenty-one females, 



belonging, I believe, to this species. Phorbia, however, is a 

 difficult genus, and requires much material and long and 

 careful study before the species can be identified with 

 certainty. I have not previously met with this species. 



20. Phorbia sp. A single female. Quite distinct from the 



preceding, but without the accompanying male I cannot 

 identify it. 



21. Homalomyia canicularis, L. One female. Elsewhere an 



abundant species, especially in dwellings, and presumably so 

 on the Flannan Islands. 



