430 Mr. J. C. Dale on some British Diptera. 



been such in the inland neighbourhood, so many as seventeen have 

 been reckoned on a single tree. In a rabbit warren at the wild pen- 

 insula of the Horn, in the north-west of the county of Donegal, I 

 once, on the 27th of June, saw forty of these birds in a dense flock. 

 A note appears in my journal stating that, on the 3rd of April and 

 several previous mornings, seven or eight of these birds frequented 

 an old garden in the town of Belfast, and one or two of them were 

 occasionally to be seen perched on the back of a cow kept there. 

 By George Mathews, Esq., of Springvale, county of Down, I have 

 been informed that a relation living there, had a pet gray crow which 

 followed him about the place. When not so engaged, it sometimes 

 went to feed with its brethren on the shore, but always hurried 

 back to its master when whistled for. 



In the middle of May last, I met with this species in the Valley 

 of Sweet Waters, near Constantinople, and at the beginning of June, 

 in the islands of Delos and Paros. 



LI. Descriptions, tyc. of a few rare or undescribed species 

 of British Diptera, principally from the collection of J. C. 

 Dale, Esq., M.A., F.L.S., &c. 



To the Editors of the Annals and Magazine of Natural History. 



Gentlemen, 

 Having some Diptera in my British Collection of Insects which I 

 could not ascertain the names of, I forwarded a few to Mr. Haliday 

 for his opinion ; and wishing that other entomologists should profit 

 thereby as well as myself, I think I cannot do better than to make 

 it public through the medium of the ■ Annals.' 



I am, yours obediently, 



J. C. Dale. 



Curtis's Guide, genus 1157, Limnobia. (Subgenus Dicranomyia ?) 



Sectio.— -Nervo cubitali furcato ramis liberis. 

 Areola disci nulla. 

 Areola brachiali anteriore posteriorem superante. 



L.flavo-limbata (C.G., species 39 b ). — Fusca, thoracis et scutelli limbo, 

 pectoris vitta laterali dilatata et ventris incisuris flavis : alis ob- 

 scure hyalinis, stigmate pallido, nervis pubescentibus. 

 <J ? Long. 2|— 3 ; alar. 6 lin. 

 ? Synon. L. (39 C. G.) pavida, A. H. H., Ent. Mag. I. From a 



late letter it appears to be different from pavida, though allied to it. 



" Fusca nitida. Antennae fuscae thoracis longitudine. Mesothoracis scu- 

 tum et scutellum flavo-marginata. Pleurae magna parte fiavae. Abdominis 

 incisure ventrales et dorsalis ultima tenuiter flavicantes. Terebra rufescens 

 gracilis recurva. Forceps $ brachiis linearibus reflexis. Pedes fusci. Hal- 

 teres fusco-pallidi. Alae obscure-hyalinae, nervis pubescentibus, stigmate 

 obsoleto lutescente ad apicem nervi subcostalis. Nervus subcostalis margi- 

 nem attingit adversus fuscam nervi cubitalis. Nervus mediastinus cum sub- 

 costali connexus paulo ultra ortum radii, et cito marginem attingens. Nervus 



