Insects. 2107 



thinly clothed with fulvous pubescence on the disk, more densely so 

 on the sides ; the metathorax rugose, truncate posteriorly ; the wings 

 subhyaline, slightly clouded at their apical margins ; the tegulae pi- 

 ceous ; the nervures ferruginous ; the legs have a rich rufo-fulvous 

 pubescence, that on the tarsi beneath is rufo-ferruginous ; the apical 

 joints ferruginous. Abdomen ovate, shining, and very delicately 

 punctate ; the margins of the segments are pale rufo-piceous, and 

 have a thin fascia of fulvous pubescence, except the basal one, which 

 has only a little laterally ; the basal margin of the second and third 

 segments has an interrupted fascia of white pubescence, the latter 

 sometimes almost or entirely obliterated ; the apex fulvous ; beneath, 

 the pubescence is fulvous. 



Male. — (Length 3j — 4j lines). Black ; the face has a clothing of 

 short white pubescence, slightly stained with yellow at the base of 

 the antennae, which are not quite so long as the head and thorax ; the 

 clypeus produced in front, more or less yellow at the apex ; the man- 

 dibles ferruginous at their apex, and sometimes having a yellow stripe 

 in the middle. Thorax very closely punctured, thinly clothed on the 

 disk with pale fulvous pubescence ; the tegulae rufo-piceous, with a 

 yellow spot in front; the wings hyaline, iridescent, and slightly 

 clouded at their apical margins ; the four posterior tibiae, at their base 

 and apex, the anterior pair, with a line above, yellow ; all the tarsi 

 yellow, with the apical joints ferruginous. Abdomen, the first seg- 

 ment, except the extreme base, and the whole of the second and third 

 segments, red ; at the basal margin of the second and third segments, 

 laterally, is a patch of white pubescence, beyond which is a black dot. 



Var. 1, with a black spot in the centre of the second and third seg- 

 ments. 



Var. 2, with a broad black stain on the second and third segments, 

 leaving only the margins and sides laterally red. 



Var. 3, only the margins narrowly red. 



Var. 4, the margins only narrowly rufo-piceous. 



The synonymes of this species, as quoted by St. Fargeau, and also 

 by Walckenaer, are not altogether satisfactory : St. Fargeau refers the 

 male to the Apis bicincta of Schrank, but the description of that au- 

 thor is too brief to be relied upon ; it would suit, equally well, two or 

 more distinct species. I think the female is the Andrena vulpina of 

 Fabricius's ' Syst. Piez.' As far as the description of that author goes 

 it suits our species very well. The Halictus terebrator of Walckenaer 

 is undoubtedly synonymous, yet, although that author was of the same 

 opinion, he, regardless of all laws of priority, sunk the name given by 



