1899.] 65 



Nemouea vaeiegata, Oliv. — Common ; N. maeginata, Pict., Morton. — Common ; 

 N. lateealis, Pict. — One only ; N. inconspicua, Pict. — A few. 



EPHEMEEID^. 



These have been already recorded by the Eev. A. E. Eaton ; cf. 

 Ent. Mo. Mag. (2), ix, pp. 265, 266. 



ODONATA. 



A glance at the short list here given suffices to stow that the 

 district is apparently very poorly provided with dragon-flies. 

 Leucoeehinia albifbons, Burm. — A few at Lac Ter, the first occasion on which I 



had seen it alive. 

 SoMATOCHLOEA METALLicA, V. d. L. — Lac Brenet, abundant. 

 CoEDULiA .ENEA, L. — Lacs de Joux and Brenet, common. 

 .^SCHNA JtTNCEA, L. — Vallee de Joux, and elsewhere, occasional. 

 JEscHNA GEANDis, L. — Not unfrequently seen, but not captured. 

 Caloptebtx tieqo, L. — Roadside between Le Pont and Vallorbe. 

 Enallagma cyathigeeum, Charp. — In great abundance at the lakes. 

 Ageion pulchellitm:, V. d. L. — Lac Ter, abundant. 

 Lestes sponsa, Hansm. — Lac Ter, common. 



In addition to the above, a Corduline (probably -S. arctica, Zett.) was often seen 

 in the mountains ; a Gomphine (almost certainly Onychogomphus forcipatus, L.) 

 was once seen on the shore of Lac Brenet ; and a rather small JSschna (which I 

 suspect was J?, affinis, V. d. L.) was several times observed in the mountains. 



Lewisham, London : 



January, 1899. 



ON THE BRITISH SPECIES OP THE DIPTEROUS GENUS 

 LOXOCERA, Mg. (FAM. PSILID.E), WITH THE DESCRIPTION OF A 



NEW VARIETY. 



BY EKNEST E. AUSTEN. 



While collecting last summer in the Highlands of Scotland, Col. 

 Terbury met with what appears to be a melanic variety of Loxocera 

 aristata, Pz. {elongata, Mg., Schin.). After a most careful examina- 

 tion, I have entirely failed to discover in either sex any structural 

 difference whatever from the species in question, but since the form 

 may as well receive a name, I propose to term it in honour of its 



discoverer. 



Loxocera aristata, var. Yerburyi. 



The new variety may be characterized as follows : — 



Loxocera aristata, var. Yerburyi (var. nov.). — Differing from the typical form 

 in that the scutellum and dorsum of the thorax are ivholly black ; pleurae in <J 

 shining black, except a somewhat ill- defined ferruginous area extending from the 



