84 ANDRENma!;. 



This insect, which I formerly regarded as the male of H. Icevigatus, 

 bears some resemblance to the male of H. sexnotatus^ as Kirby 

 himself remarked; but its abdomen is more elongate and widest 

 towards its apex ; its antennae are proportionally rather longer, and 

 its clypeus is entirely black. In the Kirbyan collection there is only 

 one specimen, the type ; it is much smaller than the male of H. ' 

 sexnotatus ; but the males of this genus vary considerably in that 

 respect. I cannot assign it to any species as a variety, having only 

 seen the typical example ; but it may be the male of H. malachurus. 



B.M. 



6. Halictus zonulus. 



H. ater, pallide rufo pubescens ; abdominis segmentis basi sublsevibus. 

 Mas pedibus posticis nigris. 



Halictus zonulus, Smith, Zool. vi. 2171 • Bees Great Brit. 26 $ $ . 



Nyland. Notis. ur Stilish, pro Faun, et Flo. Fenn. ii. 241. 



Thorns, Hym. Scand. ii. 139. 

 Hylseus zonulus, Schenck, Wass. Bien. 266. 



Female. Length 4|-5 lines. — Jet-black; clypeus' moderately pro- 

 duced, ciliated with pale fulvous pubescence ; that on the face is 

 ochraceous and thinly scattered ; the thorax strongly and closely 

 punctured ; the metathorax rugose ; the tegulee nigro-piceous ; 

 wings subhyaline, faintly clouded at their apical margins, the ner- 

 vures ferruginous ; the pubescence on the thorax and legs fulvous, 

 brightest on the tarsi and posterior tibiae. Abdomen subovate, 

 shining, the basal segment very delicately punctured, the other 

 segments finely punctured ; on each side of the second and third on 

 their basal margins a little fine white pubescence ; sometimes the 

 fourth has one indistinct white band at its base, the apex pale 

 fulvous. 



Male. Length 3|-4 lines. — Black ; the face with a short white 

 pubescence ; the clypeus slightly produced, and having occasionally 

 a transverse white spot at its apex ; the thorax with a thin pale 

 ochraceous pubescence ; wings as in the female ; the legs black ; 

 the claws ferruginous. Abdomen oblong-ovate, margined with 

 white pubescence, as in the female. B.M. 



This insect closely resembles H. leucozonius ; but the abdomen is 

 less pubescent, and the base more finely punctured ; the metathorax 

 is rugose at its base, not irregularly rugose-striate ; the male has 

 the posterior tarsi black, its nasus is less produced ; the insect is 

 also rather larger. 



Taken in August at Plumstead, also at Weybridge ; it has also 

 been found at Bristol and in Scotland. Dr. Nylander says it occurs 

 in Denmark and Sweden. Dr. Schenck found it at Nassau. 



7. Halictus sexnotatus. 



H. aterrimus, pube incana, abdominis segmentis tribus intermediis 

 basi utrinque niveo-albis. 



