6. HALICTUS. 85 



Halictus sexnotatus, Walek. Mem. Hcdic. 72. 



St.-Farg. Hym. ii. '27-3. 



imith, Zool. vi. 2174; Bees Great Brit. 28. 



Nyland. Notts, ur Siillsk.pro Faun. etFlo. Fenn. ii. 239. 



Thorns. Opusc. Ent. 308 ; Hym. Scand. ii. 144. 

 Melitta sexnotata, Kir by, Mon. Apum Any I. ii. 82, tab. 15. fig. 7 § > 



Hyleeus sexnotatus, Schenck, JSass. Bien. 205. 



Female. Length 5 lines. — Jet-black ; the face has a thin white 

 pubescence ; the thorax very closely and finely punctured, and 

 having a thin scattered white pubescence ; the wings subhyaline, 

 their apical margins clouded, the nervures nigro-piceous ; the scopse 

 on the posterior tibia? are slightly fuscous above ; the tarsi beneath 

 pale yellow, their apical joints rufo-piceous. Abdomen glossy and 

 very delicately punctured ; the base has a little white pubescence ; 

 an angular patch of short snow-white pubescence on each side of 

 the basal margins of the second, third, and fourth segments, those 

 ou the fourth segment frequently obliterated ; beneath, the mar- 

 gins of the segments have a thin fringe of long white pubescence. 



B.M. 



Male. Length 4 lines. — The pubescence as in the female ; antennae 

 shorter than the thorax, the nagelluni nigro-piceous beneath ; the 

 face covered with short white pubescence, the clypeus having a 

 white spot at its apex. Abdomen elongate-ovate, spotted as in the 

 other sex. B.M. 



This is a species hitherto rare in cabinets. Mr. Ivirby took it at 

 Barham ; the only locality where it has been recently met with is 

 Weybridge; the female occurs there in June and September, in the 

 lane leading to Byfleet, opposite the wood, about half a mile from, 

 the railway station : the male appears in September : they were taken 

 on the flowers of the bramble. Specimens have been captured at 

 Portsmouth. This is the most beautiful species hitherto found in 

 this country ; and the exact locality is therefore pointed out. 



The species is readily distinguished from all the other British ones 

 by the snow-white spots on the abdomen and its coal-black colour ; 

 it is found in France, Germany, and Sweden. 



8. Halictus quadrinotatus. 



H. aterrimus, cinereo subpubescens, abdominis segmentis duobus 

 intermediis basi utrinque albis. 



Halictus quadrinotatus, Smith, Zool. vi. 2173: Bees Great Brit. 29. 



Nyland. Notts, ur Stilish, pro Faun. etFlo. Fenn. ii. 240. 



Thorn*. Opusc. Ent.SOS; Hym. Scand. ii. 144. 

 Melitta quadrinotata, Kirby, Hon. Apum Anyl. ii. 79 J £ • 

 Hylaeus quadrinotatus, Schenck, Nass. Bien. 206. 



Female. Length 3-3| lines. — Black ; head and thorax having a 

 thin ciucreous pubescence, closely and rather finely punctured; 



