74 BEES OF GREAT BRITAIN. 



rugose space, enclosed by a sharp ridge; the antennae have 

 the flagellum nigro-piceous towards the apex beneath, and 

 are half the length of the thorax ; the thorax thinly clothed 

 above with short fulvous pubescence, at the sides it is shorter 

 and paler ; the pubescence on the femora beneath and also the 

 floccus, pale fulvous ; the scopa bright fulvous ; the tarsi be- 

 neath fulvo-ferruginous, the apical joints of the tarsi ferru- 

 ginous ; wings hyaline, their nervures pale rufo-testaceous. 

 Abdomen ovate, shining and rather strongly punctured; the 

 margins of the segments depressed, and having a thin sparing 

 fringe of pale fulvous pubescence ; the apical fimbria fusco-fer- 

 ruginous. 



This insect might be mistaken for a small example of A. atri- 

 ceps, female ; but the description will at once point out the dif- 

 ference. A single specimen has been captured near Coliiey 

 Hatch : there are one or two in the collection of Mr. Desvignes, 

 who does not know their locality. 



27. Andrena spinigera. 



A. atra, fulvo-pilosa ; thorace fulvescenti ; abdomine fusco ; pe- 

 dibus rufo-fuscis, pilosis. 



Melitta spinigera, Kirby, Mon. Ap. Angl. ii. 123. 63<. 

 Andrena spinigera, Smith, Zool. v. 1669. 7 < 9 



Female. Length 5^6 lines. Black ; the face and cheeks thinly 

 clothed with fulvous pubescence, the apical half of the man- 

 dibles ferruginous. Thorax thinly clothed above with fulvous 

 pubescence; the metathorax and sides have pubescence of a 

 lighter tint ; wings hyaline, the nervures pale ferruginous, the 

 tegulse rufo-piceous ; the legs dark rufo-testaceous, their pu- 

 bescence fulvous ; the floccus and scopa beneath fulvous, the 

 latter fuscous above. Abdomen : the apical margins of the two 

 basal segments rufo-testaceous ; two minute dots of the same 

 colour on the basal segment ; the abdomen has a scattered ful- 

 vous pubescence ; beneath, ferruginous at the base. 



Male. Length 5-5^ lines. Black ; the pubescence pale fulvous ; 

 head usually much wider than the thorax, the face densely 

 clothed with black pubescence ; the mandibles forcipate, and 

 armed at their base with a long acute spine, their tips ferru- 

 ginous ; antennae about the length of the thorax, the joints of 

 the flagellum subarcuate. Thorax : the wings hyaline and iri- 

 descent, the nervures pale ferruginous ; legs fusco-ferruginous, 

 the apical joints of the tarsi paler. Abdomen lanceolate, shining, 



