Andrena 
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clarkella. Kirby. This species is included on the 
authority of Paget, who gives it in his list of 
insects found at Yarmouth. 
gwtnan’a. Kirby. Very abundant in early spring; 
found principally at the (lowers of the dandelion. 
mcoLOH. Fab. Not uncommon, Norwich, Brundall ; 
Juno and July. 
IIELVOLA. bin. Common in the neighbourhood of the 
city, April, May, and June. 
varians. Bossi. Much less common than the preced- 
ing, and is to bo found during the same months. 
atriceps. Kirby. One of the earliest of the spring 
heos, and very abundant at willows, and early 
spring flowers. 
nioro-aenea. Kirby. Perhaps the most common and 
generally distributed species of the genus ; it does 
not appear quite so early as tho preceding. 
trihmerana. Kirby. This species is fairly common 
round Norwich during April, May, and June. 
picicornis. Kirby. This very local species is far from 
common. I have only taken throe females and 
two males at Mousehold and Cringleford, in 
April. 
bimaculata. Kirby. Mr. Smith says, “ I took tho 
female some years ago, hut have never found tho 
male.” Beside tho specimens taken by Kirby, 
these I believe are the only ones that have been 
taken ; although very local, they abound in some 
seasons all round Norwich, and also at Brundall. 
Some doubt has been expressed as to this being a 
distinct species, or being anything more than a 
variety of decorata, or rather, the latter a variety 
of bimaculata, though certainly very much alike 
when compared singly ; hut when a series of each 
are compared, I think there can be no doubt but 
that they are two good species, to say nothing 
of the difference of the time of appearance of 
tho two insects. This appears early in April, 
whereas decorata does not appear till the end of 
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