6. HALICTUS. 97 



23. Halictus morio. 

 H. aeneus, metathorace casrulescente, abdomine nigro. 



Halictus morio, St.-Farq. Ili/m. ii. 284. 



Smith, Zool. vi. 2101 ; Bees Great Brit. 38 ; Entomol. iv. 269. 



Nyland. Notts, ur Sdllsk. pro Faun, et Flo. Fenn. i. 204. 



Thorns. Opusc. Ent. 313 ; Ht/m. Scand. ii. 151. 

 Hylaeus morio, Fabr. Ent. Syst. ii. 306. 



Sehenck, Nass. Bien. 295. 

 Melitta morio, Kirby, Mon. Apum Angl. ii. 60 <$ § . 



Female. Length 2-2 .V lines. — Head and thorax brassy green, finely 

 and closely punctured; antennae fulvous towards their apex be- 

 neath ; thorax shining, the metathorax of a blue-green, longitu- 

 dinally rugose at the base, not enclosed ; the wings subhyaline, 

 splendidly iridescent, the nervures testaceous ; the teguloe piceous ; 

 the legs have a glittering white pubescence. Abdomen ovate, 

 black, and shining, having a short, scattered, pale pubescence at the 

 sides and towards the apex ; the basal lateral margins of the two 

 intermediate segments have sometimes a little short white pubes- 

 cence, very frequently obliterated. B.M. 



Male. Length 2-1- lines. — Head and thorax coloured as in the female, 

 the clypeus yellow at its apex ; the flagellum fulvous beneath. The 

 abdomen elongate, black, the margins of the two basal segments 

 depressed ; a little white pubescence on the basal margins of the 

 second and third segments. KM. 



One of the most abundant species of the genus. Its colonies are 

 common in banks, in the mortar of old walls (in the latter situations 

 in streets in the suburbs of London) . It appears frequently in April, 

 and is then found frequenting the flowers of the chickweed. Males 

 have been taken at the end of October. 



24. Halictus leucopus. 



H. viridi-seneus, abdomine nigro. Mas antennis subtus fulvis, 

 abdomine nigro, tarsis albidis. 



Halictus leucopus, Smith, Zool. vi. 2100; Bees Great Brit. 39; En- 

 tomol. vi. 270 J 2 • 



Nyland. Notts, ur Sdllsk. pro Faun, et Flo. Fenn. i. 205. 

 Thorns. Opusc. Ent. 313 ; Hym. Scand. ii. 150. 

 Melitta leucopus, Kirby, Mon. Apum Angl. ii. 59 $ . 



Female. Length 3 lines. — Head and thorax dark green, the clypeus 

 slightly produced ; the flagellum testaceous beneath. Thorax 

 shining ; the tegulee testaceous ; the wings hyaline, iridescent, the 

 nervures pale testaceous ; the legs have a glittering white pubes- 

 cence, that on the tarsi beneath pale fulvous. Abdomen very- 

 glossy at the base, the apical margins of the segments rufo-piceous, 

 and having a scattered pubescence towards the apex ; sometimes a 



