186 [August, 



Philotelma defectum, Hal. — In describing this genus Becker placed it among 

 the Notiphilinse on the antennal characters, but the chaetotaxy, especially of 

 the head, must surely place it in the neighbourhood of Csenia and Scatella 

 among the Ephydrinsa. Becker also incorrectly recognised Haliday's species ; 

 the true Csenia defecta, Haliday, is vmdoubtedly a Philotelma, and I consider it 

 probable that EpMjdra albidiperuiis, Stenh., and E. psilopina, Zett., also l)elong to 

 the same gentis, indeed Haliday considered the fii'st a synonym of his defecta. 



* Philotelma nigripennis, Mg. — This has not the white face nor the distinct 

 wliitish spots on the wing of defectum, though otherwise much like it. It is not 

 uncommon on the Suffolk coast in September, and Col. Yerbury has taken it at 

 Gravesend (Kent). 



Scatella sorhillans, Hal., and sestuans, Hal. — I prefer to retain Haliday's 

 names for these species instead of reviving, on the evidence of doubtfiU type 

 specimens, old unrecognised names of Meigeu. 



Scatella Icucostoma, Mg. — This was recognised from Meigen's description by 

 Haliday without hesitation, and the size given by Meigen, as well as his descrip- 

 tion of the " Lcih — , ohnc glanz," confirms the identification. It is the same as 

 dichseta, Lw., and thovigh the specimens now existing in Winthem's and Meigen's 

 collections ai-e according to Becker only sorhillans, Hal., I see no reason for 

 altering the name. 



Scatella ste7ihamm.eri, Zett., has been added to the "List" by Grimshaw 

 (Ann. Scot. Nat. Hist., 1909, 250) on the strength of a single specimen, thovigh 

 this is a species in which it is very necessary to see a long series before being 

 certain of its identity. 



Scatella noctula, Meig., of the " List" is now considered to be an unrecog- 

 nised species of Scatojjhila -, according to Meigen's description it resembles in 

 its wing markings S. ^micornis, Cz., in having a larger number of white spots or 

 stripes than most of the other species. I cannot say what species Haliday and 

 Walker had under this name, but Haliday thought his compta to be only a 

 variety. A species answering to the description may yet be foimd upon our 

 coasts. 



* Scatophila unicornis, Czerny. — For a long time a pair of a Scatophila, taken 

 by Mr. Verrall at Denmark Hill, London, on February 9th, 1867, stood without 

 a name in his collection ; I was doubtful myself whether the peculiar horn at 

 the middle of the upper mouth edge was not abnormal, but Dr. Wood has taken 

 a number of this species round hotbeds in the winter, and in all the males this 

 horn is present, thoiigh absent in the females. Czerny described it in 1900, from 

 two males taken on a hotbed in a garden at Badhall, Austria. 



* Scatella caviceps, Stenh. — I possess specimens of this species from Norfolk, 

 Suffolk, Essex, and Hants. The facial profile is different in the two sexes, Sten- 

 hammer's description applying to the male only. Tlie wings, thorax, and abdo- 

 men are very similar to those of cribrata, bvit the halteres are pale, and there 

 are only two pairs of strong dorso-central bristles instead of three, besides 

 numerovis smaller differences. 



* Scatella variegata, Lw.— I took about a dozen specimens of what I believe 



