British Hymenoptera. 239 



clothed with Ijlack hau's on the first three segments, and with red 

 on the last three ; genital armature in the ^ shaped as in the pre- 

 ceding (see PL XII., figs. 5 — 5 6). Legs clothed with pale hairs 

 intermixed with hlack. 



5 and 5 . Differing from the ^ , besides in the usnal sexual 

 characters, in having the j-ellow colour of the hairs rather less 

 bright, the black abdominal band wider, sometimes nearly covering 

 the whole body. Length, ^ and $ 15 — 18 mm., ^ 10 — 12 mm. 



Hah. Very common and generally distributed. 



10. Bomhus Icqjponicus, Fabr. 



Fabr., Ent. Syst., ii., p. 318; Smith, Cat. Brit.Hym., 

 2nd ed., p. 204. 



Head and thorax clothed with black hairs ; the face below the 

 antennae in the ^ , the thorax widely in front and very narrowly 

 behind, in both sexes, yellow. Abdomen black at the extreme base 

 in the J , on the first three segments in the ^ ; the rest of the 

 abdomen in both sexes clothed with red hairs. 



(? . Clothed with rather shaggy hairs. Head clothed with 

 pale hairs on the vertex, and with yellow on the face below the 

 antennae ; face shorter and wider than in pratorum, the distance 

 between the eyes on the vertex being moi'e nearly the length 

 of the eye ; cheeks rugosely puncttired, shining, as short as their 

 apical width. Antennae with the 2nd and 4th joints of the 

 flagellum subequal, the 3rd about two-thirds the length of the 2nd. 

 Thorax clothed with black hairs, with a wide yellowish band in 

 front, and a very narrow one round the metathorax posteriorly ; 

 wings slightly dusky. Abdomen clothed on the first two segments 

 with black hairs, and on the 3rd and following segments with red, 

 the hairs of the basal segments sometimes intermixed with 

 yellow ; beneath entirely clothed with ochreous-yellow hairs. 



2 and § . Coloured much as the ^ , but the colours brighter, 

 and the abdomen black only on the 1st segment and the extreme 

 base of the 2nd, the remainder red or orange-red. Abdomen 

 beneath clothed with fine black hairs ; hairs of the tibiae black. 

 Length, 3^ and $ 15— 17 mm., ^ 12— 14 mm. 



Hah. Mountainous districts ; Black Mountain, Breck- 

 nocksliire ; Snowdon ; Herefordshire ; Monmouthshire ; 

 Halifax Moor, Yorkshire ; Loch Kannoch, Perthshire. 



TRANS. ENT. SOC. LOND. 1884. — PART II. (jULY.) R 



