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APPENDIX. 
nal segments have uninterrupted fasciae of the same colour : at the 
apex is a little bright yellow pubescence, that on the legs is of the 
same colour ; the apical joints of the tarsi are rufo-piceous. 
The male has not hitherto been captured in this country : ac- 
cording to Nylander it closely resembles the male of Halictus 
flavipes , but the antennae beneath are entirely yellow ; in Jlavipes 
the apical joints are more or less black beneath. 
It is very probable that this species is the true “ tumulorum v of 
Linneus ; the authentic specimens in the Linnean Cabinet, have 
the antennae entirely yellow beneath: if so, the “ tumulorum ” of 
this catalogue must be changed to flavipes. 
Andrena apicatus, Smith , Zool. v. 1748, 38, $. 
Male (length 4 lines). Black : the face covered with long pu- 
bescence, on the clypeus it is white, between which and the base of 
the antennae it is sooty black ; at the extreme vertex is a fringe of 
pale hair, the same is also thinly scattered on the disk of the thorax, 
at the sides of the metathorax it is again sooty : the antennae are 
about the length of the head and thorax ; the mandibles are arcu- 
ate, and have at their base a large obtuse tooth : the legs nigro- 
piceous, their pubescence pale : abdomen ; the basal segment has a 
little thin, long, pale pubescence ; the margins of the segments 
nigro-piceous, and the extreme apex clothed with bright yellow pu- 
bescence. 
Hab. — Bristol. 
Andrena simillima, n. s. B.M. 
Female (length 5 lines). Black: the pubescence on the face 
pale fulvous, that on the vertex bright fulvous ; one or two of the 
apical joints of the antennae beneath piceous ; the clypeus coarsely 
punctured : the disk of the thorax clothed with bright fulvous pu- 
bescence, becoming paler at the sides of the metathorax: the wings 
hyaline, their apical margins slightly clouded : the femora beneath 
are fringed with very pale pubescence ; the floccus on the posterior 
coxae and trochanters is white, the pubescence which clothes the 
