90 andkenidjE. 



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 labruni and mandibles 

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

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

 hyaline, splendidly iridescent, the nervures ferruginous ; the femora 

 at their apex, the tibiae at their base and apex, and the tarsi 



\ yellowish white, the claws ferruginous. Abdomen eloDgate, 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. 



Var. /3. The sides and apical margins only red. 



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

 following as in var. j3. 



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 Stylojjs. 



14. Halictus laevigatas. 



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

 nitidissimo, segmentis intermediis basi pallescentibus. Mas niger ; 

 antennis thorace longioribus fulvescentibus, supra subfuscis ; ab- 

 domine nitido, segmentis intermediis basi albis. 



Halictus lsevigatus, Nyland. Notis. ur Sallsk. pro Faun, et Flo. Fenn. 

 ii. 239. 



Smith, Entomol. iv. 266 cJ . 

 Melitta laevigata, Kirby, Mon. Apu?n Any I. ii. 75 2 - 

 Melitta fulvicovnis, -Kirby, 3fon. Apum Any I. ii. 67 ($ ? 

 Halictus fulvicornis, Smith, Zool. vi. 2170 <S . 



Female. Length 4| 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 largo, scattered on the 

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

 nigro-piceous ; the wings subhyaline, iridescent, the nervures pale 

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





