1882.] 199 



3. Colletes picistigma, Thorns., Hym. Scand. ii, p. 165. 



Like the other smaller species of the genus in general appear- 

 ance, but the <$ has the first abdominal band interrupted, the basal 

 segment largely and closely punctured, and the sixth ventral segment 

 shining, strongly punctured, and with a shallow fovea on each side 

 near the apex ; each segment beneath has also an entire fringe of short 

 hairs, in this respect resembling succincta and marginata ; but the 

 former of these may be known by the two deep foveas of the sixth ven- 

 tral segment, and the latter by this segment being simple, with only a 

 slightly raised dorsal line ; the genitalia have the apical portion of 

 the stipites about equal to the basal, the apical pencil of hairs reaching 

 to about the end of the sagittse ; the sagittal have their lateral mem- 

 branous wings projecting beyond the end of the thicker portion, 

 somewhat turned down at the apex and rounded. 



The ? has the pubescence of the thorax rather of a brighter red 

 than in its allies ; the abdomen slightly shining, but with its basal 

 segment largely and closely punctured ; its best characteristic is that 

 it lacks the long scattered hairs, which clothe the whole basal half of the 

 first segment infodiens and succincta, although the segment is clothed 

 with short hairs at the sides and at the extreme base. The colour of 

 the abdomen also is of a particularly deep black, and the bands whiter 

 than in the other species. 



I have taken the £ at Hastings, Falmouth, Hayling Island, Little- 

 hampton, and Southwold. Mr. Bridgman has taken it at Norwich. 

 The capture of the <$ by Sir S. S. Saunders in Hampshire was recorded 

 in our December number. 



4. Halictus beevicoenis, Schk., Jahrb. Yer. Naturk. Nassau, xvi, 



1861, p. 310. 



This little species, of which I have at present only seen British 

 specimens of the <£, is very distinct, and, considering the difficulty of 

 the genus, tolerably easy to recognise by the following characters : 



3 . The antennae are shorter than in most of the black species ; the thorax is 

 deeply punctured, the punctures being somewhat remote, i. e., about the width of 

 two punctures apart ; the surface is shining, and nearly smooth ; the punctures of 

 the scutellum are rather larger and more remote ; the metathorax is longitudinally 

 rugose at the base, its brow somewhat rounded and smooth ; the abdomen is short 

 and oval, slightly shining, finely and clearly punctured on the first three segments ; 

 beneath there are a few rather short hairs ; extreme base and apex of tibiae, and the 

 whole of the tarsi, pale. 



$ . Head very finely and closely punctured ; clypeus very largely and remotely, 



