56 ANDRENID-E. 



duced at their base beneath into a large angular tooth ; the antenna? 

 as long as the thorax, the nagellum piceous beneath, the joints sub- 

 arcuate. Thorax clothed above with long fuscous pubescence ; the 

 wings subhyaline, iridescent, faintly clouded at their apex, the 

 nervures pale ferruginous ; legs obscure rufo-testaceous, the femora 

 have a long pale pubescence ; the apical joints of the tarsi pale 

 rufo-testaceous, the tibiae and tarsi having a scattered glittering 

 yellowish-white pubescence. Abdomen lanceolate, subpetiolate, 

 shining, and having a loose scattered pale pubescence ; the apex has 

 a little glittering yellowish-white pubescence. 



This insect was received from Scotland ; it is a very distinct and 

 marked species, and easily recognized ; only one specimen has 

 occurred. 



39. Andrena constricta. 



A. nigra, nitida, cinerascenti pilosa, tibiis tarsisque posticis fulvis : 

 abdominis segmentorum trium intermediorum ruurgiuibus basi 

 constrictis. 



Andrena constricta, Smith, Zool. vii. Append, lix, c? ; Bees Great 

 Brit. 84 J . 



Male. Length 4 lines. — Black ; antennas as long as the thorax, 

 rufo-piceous beneath, the joints subarcuate ; the clypeus coarsely 

 punctured, the face having a thin pale yellow pubescence. Thorax 

 punctured and shining, the metathorax having a thin griseous 

 pubescence ; the wings subhyaline, having a fulvous tinge, the 

 tegulae and nervures rufo-testaceous ; the legs rufo-testaceous, 

 sprinkled with a pale glittering pubescence ; the posterior tibiae 

 and all the tarsi fulvo-piceous : the tibiae have a fuscous stain 

 beneath. Abdomen ovate, rather strongly punctured, the margins 

 of the three intermediate segments depressed and rufo-testaceous, 

 the extreme apex fulvo-piceous, aud having a glittering pale pubes- 

 cence. 



This species was taken in Scotland, at Kirkpatrick-Juxta. I have 

 seen three specimens of the male, but do not know the other sex. 



40. Andrena aprilina. 



A. nigra, thorace fulvo-piloso ; abdomine nitido, segmentorum mar- 

 ginibus testaceis ; tarsis ferrugineis. 



Andrena aprilina, Smith, Zool. vi. 2211 J ; Bees Great Brit. 85 tf . 



Male. Length 4| lines. — Black ; the clypeus clothed with brown 

 pubesceuce, at the base of the antennae and on the vertex it is 

 fulvous ; the antennae a little shorter than the thorax, the joints 

 subarcuate. Thorax clothed with fulvous pubescence, sparingly so 

 on the disk, and palest at the sides of the metathorax ; the wings 

 subhyaline, their nervures testaceous ; the legs have a fulvous 

 pubescence, the tarsi ferruginous. Abdomen oblong-ovate, shining, 



