90 AKDREttlD^J. 



and towards the apex covered with a short pale fulvous pubescence ; 

 at the base of the second, third, and fourth segments a thin fascia 

 of white or very pale pubescence. B.M. 



Male. Length 3^-4 lines.- — The face covered with short white 

 pubescence ; the clypeus at its apex and the labrum and mandibles 

 yellow, the latter black at the base and ferruginous at their apex. 

 Thorax, the tubercles and tegulse pale yellow in front ; the wings 

 hyaline, splendidly iridescent, the nervures ferruginous ; the femora 

 at their apex, the tibise at their base and apex, aud the tarsi 

 yellowish white, the claws ferruginous. Abdomen elongate, widest 

 towards the apex, the three basal segments red; the base and a 

 quadrate patch nearly reaching the apical margin of the first seg- 

 ment, a short transverse patch on the apical margin of the second 

 segment, and a similar one on the third black; beneath, red 

 towards the base ; a black dot at the extreme lateral margins of the 

 second and third segments. B.M. 



Yar. j3. The sides and apical margins only red. 



Yar. y. The apical margin only of the basal segment red, the two 

 following as in var. (3. 



The female of this species most closely resembles that of small 

 examples of H. cylindricus ; but its clypeus is more produced, the 

 pubescence on the body is griseous, that on the legs pale yellow, 

 not fulvous, and the base of the metathorax is much less coarsely 

 sculptured, and the abdomen is obovate slightly narrowed at the 

 base ; the species is also smaller. The male has a more elongate 

 head, and the highly coloured specimens have the mandibles more or 

 less yellow ; but in small uncoloured ones the mandibles are black. 



' The species is found in all parts of the United Kingdom. I have 

 found both sexes infested by some species of Stylojos. 



14. Halictus laevigatas. 



H. ater, subpubescens, thorace pube ferruginea vestito ; abdomine 

 nitidissimo, segmentis intermediis basi pallescentibus. Mas niger ; 

 antennis thorace longioribus fulvescentibus, supra subfuscis ; ab- 

 domine nitido, segmentis intermediis basi albis. 



Halictus laevigatus, Nyland. Notts, ur Sallsk. pro Faun, et Flo. Fenn. 

 ii. 239. 



Smith, Entomol. iv. 266 <$ . 

 Melitta laevigata, Kirby, Mon. Apum Angl. ii. 75 $ • 

 Melitta fulvicornis, Kirby, Mon. Apian Angl. ii. 67 c? ? 

 Halictus fulvicornis, Smith, Zool. vi. 2170 $ . 



Female. Length 4-J- lines. — Black ; the face thinly clothed with 

 pale fulvous pubescence ; the clypeus slightly produced, shining, 

 and having a few large punctures, the mandibles ferruginous at 

 their apex. Thorax shining, the punctures large, scattered on the 

 disk, which is clothed with fulvo-ferruginous pubescence ; the tegulae 

 nigro-j)iceous ; the wings subhyaline, iridescent, the nervures pale 

 ferruginous, the apical margins faintly clouded ; the legs have a 



