No. v.— DIPTERA, CULICID^. 



By Fred. V. Theobald, M.A., F.E.S., etc. 



(Plate 4 and Text-figures 1 — 12.) 



(Communicated by Prof. J. Stanley Gardiner, M.A., F.R.S., F.L.S.) 



Read 15th June, 1911. 



The following Report is drawn up from material collected by Mr Hugh Scott and 

 Mr J. 0. F. Fryer during the Expedition to the Seychelles and dependent Islands, such 

 as Aldabra. So far only nine species of Culicidse have been found on the Islands. One 

 of these (undoubtedly a new species) was preserved only in spirit and cannot be described ; 

 from the wing scales and $ palpi it is evidently a Tceniorhynclms and of large size, but 

 there are certain differences which may necessitate its being placed in a new genus when 

 further material comes to hand. Of the other eight species five are new ; one is a 

 Reedomyia, another a Culicelsa, the third a Culex, the remaining two come in a new genus 

 for which I propose the name of Pseudqficalhia on account of their general resemblance 

 to the Indian Ficalbia. 



In evident error I included Ficalbia inornata Theob. from the Transvaal and 

 Ficalbia nigripes Theob. in the Asiatic genus ; they are now seen to clearly come in 

 Pseudoficalbia. 



The other three previously known Culicids are Stegomyia fasciata, Fabricius, 

 Stegomyia scutellaris, Walker and Culex fatigans, Wiedemann. 



The latter was not obtained by the members of the Expedition, unless it occurs 

 in some tubes of specimens preserved in alcohol, numbers of which have not been 

 examined as it is merely guess work to identify a Culicid from such material. Specimens 

 preserved in alcohol are most useful, if they can be definitely associated with dry specimens 

 of the same species. 



The same must be said of the larvae collected, there being no reference as to which 

 species they belong to. One, however, is figured, as Mr Hugh Scott thinks that it belongs 

 to one of the new species described here. 



Genus Stegomyia, Theobald. 

 Monog. Culicid. i. 283, 1901. 

 1. Stegomyia fasciata (F-Ahr.), 1805. 



Culex calopus, Meig., 1818. Culex toxorhynchus, Macq., 1838. 

 „ /rater, Rob. Desv., 1827. „ annulitarsis, Macq., 1848. 



„ mosquito, Rob. Desv., 1827. „ /brmomn. Walker, 1848 



„ tceniatus, Wied., 1828. „ viridifrons, Walker, 1848. 



„ konoupi, Brull6, 1832. „ inexorabilis, Walker, 1848. 



SECOND SERIES— ZOOLOGY, VOL. XV. 11 



