Insects. 2101 



legs clothed with white pubescence, that on the tarsi beneath is ferru- 

 ginous. Abdomen black, with sometimes a little white marginal 

 fringe on the first and second segments, at their extreme lateral 

 margin. 



Male. — (Length 2j lines). Head and thorax brassy green ; apex 

 of the clypeus, labrum and mandibles pale yellow, the apex of the 

 latter ferruginous; the antennae nigro-piceous above, beneath pale 

 fulvous ; the scape black. Thorax shining, closely punctured ; the 

 metathorax rotundate, frequently of a blue-green ; the tegulae piceous ; 

 the wings hyaline, splendidly iridescent ; all the tarsi and the base 

 of the posterior tibiae pale yellow; the claws rufous. Abdomen black, 

 shining, ovate ; the base of the two intermediate segments depressed, 

 and having a thin pale pubescence. 



This is not an uncommon species, but not so abundant as aeratus, 

 and it is much more local. 



Sp. 6. Halictus morio, St. Fargeau. 

 Hylaus morio, Fab., male. Melitta morio, Kirby. 



Female. — (Length 2 — 2f lines). Head and thorax brassy green, 

 closely and minutely punctured ; the antennae fuscous at their apex 

 beneath. Thorax shining ; the metathorax rotundate, of a dark blue 

 green; the tegulae piceous ; the nervures fuscous ; the wings subhy- 

 aline, splendidly iridescent ; the pubescence on the legs is white, and 

 ferruginous on the tarsi beneath. Abdomen ovate, punctured and 

 shining ; the base of the two intermediate segments slightly depressed, 

 and having laterally a little short pubescence, frequently obliterated. 



Male. — (Length 2 J lines) . Head and thorax blue-green, closely 

 and finely punctured ; the antennae as long as the head and thorax, be- 

 neath fulvous ; the scape black ; the apex of the clypeus pale yellow ; 

 the tegulae piceous ; the wings hyaline, splendidly iridescent. Abdo- 

 men linear ; the base of the two intermediate segments much depressed, 

 and having a little very fine short white pubescence laterally, fre- 

 quently obliterated. 



Closely resembling H. aeratus, but the abdomen is more strongly 

 punctured, and the metathorax atro-caerulescent. 



Sp. 7. Halictus Smeathmanellus. 

 Melitta Smeathmanella, Kirby. 



Female. — (Length 3 lines). Bright metallic green, shining, closely 

 and finely punctured ; the antennae fuscous beneath ; the scape black ; 

 VI u 



