collected in Madeira and Tenerife. 215 



size as that of sichaurccta, Rossi, wliereas it is almost as 

 large as cylindricus, F., but as Mous. Vachal saw Bridle's 

 types in Paris recently there can be no doubt that his 

 identification is correct. 



Halictus arctifrons, n. sp. 



Niger, abdominis segmento basali apice, segmentis 2, 3 et basi 

 segmenti 4, testaceis, calcaribus pallidis, 3-spinosi.s, abdomine crebre 

 piinctato. 



$ closely allied to H. angusti/rons, Vaclial (Bull. Soc. Ent. Fr., 

 1892, p. xxii), to which at first I was inclined to refer it, but on 

 communicating a specimen to the author he very kindly points out 

 that it differs from his species in being stouter and having the 

 posterior calcaria tridentate whereas in angustifrons they are 4-5 

 pectinate, and also in having the 2nd transverse cubital nervure 

 united with the 1st recurrent, whereas in angustifrons the 1st recur- 

 rent is received into the 2nd cubital cell at about a quarter of the 

 length of the cell from its apex. In colour it seems to agree well 

 with angustifrons, the head and thorax are black and the abdomen 

 black at the base and apex and testaceous red from the middle of 

 the basal segment to the middle of the 4th. The eyes converge 

 rather rapidly so as to give the face rather an elongate triangular 

 aspect, the head and thorax are closely punctured and clothed with 

 whitish hairs, and there is a line of dense white pubescence in the 

 anterior depression of the pronotum and also in the depression 

 bordering tlie mesonotum, postscutellum also densely clothed with 

 whitish pubescence, propodeum with its basal area shallow and 

 semi-circularly bounded, finely clathrate at the base, shining at the 

 apex on the brow ; abdomen closely punctured, the puncturation of 

 the basal segment slightly less close than that of the 2nd, legs black 

 clothed with whitish hairs, apex of posterior metatarsi with a tuft 

 of golden bristly hairs. 

 Long. 5 mm. 



Orotava by the sea-shore, visiting Frankenia, 20 and 23. 

 iii. 02. 



Andrena bimaculata, Kirby ? var. 



$ and $ . Madeira. T. V. W. In too bad condi- 

 tion to determine for certain. 



Andrena bipartita, Brulle. 



$ 2. Orotava, Tenerife, 21. iii. 02. 



