1S97.] 179 



common anywhere, whei-eas, one of its spring forms, Trimmemna, is 

 exceedingly common. The females of the second brood are mostly 

 more or less reddish on the abdomen, but there appear to be two 

 forms in the second brood as in the first, a red bodied form {r^osce 

 true), which corresponds with the spring spinigera, and a duller, more 

 hairy form which appears to represent the spring Trimmerana, but in 

 both spring and summer broods intermediate varieties occur. A. 

 bimaculata, race decorata, Smith, is also a Bramble species closely 

 resembling rosce in general appearance, but distinguishable at once by 

 the clathrate basal area of its propodeum ; dorsata {comhinatd) and 

 gioynana (Jiicolor), the names in brackets being the old names of 

 the second broods, visit the same plant, as also a second brood of 

 pilil^es, thoi'acica, Afzeliella, and minictula, and the strictly summer 

 species coitana and lucens ; this last is probably overlooked, as the ? 

 is exceedingly like that of coitana, but its less closely punctured 

 mesonotum and scutellum will distinguish it, and the ^ is abundantly 

 distinct in the absence of the white clypeus. Bryony is attractive to 

 several species, especially to Andrena florea, also a red bodied species 

 like roscB and himaculata, but known from either of them by the clear, 

 distinct puncturation of the abdomen. 



Andrena Hattorfiana and Oetii, two of our most beautiful species, 

 frequent the species of Scahiosa and appear in the latter half of July. 

 The former is generally found on S. {Knaiitia) arvensis, the latter on 

 one of the blue species. JVomada armata, our largest and rarest 

 species, associates with Hattorfiana, but is very rarely met with. 

 Senecio jacohcea (ragwort) attracts A. nigriceps and tridentata, the 

 latter being a great rarity, which has occurred, so far as I know, only 

 in the neighbourhood of Bournemouth and Norwich ; the other species 

 of the nigriceps group visit other plants, simillima being fond of 

 Ruhus, fuscipes of Erica, and being often very abundant on our 

 Surrey heaths, and denticulata generally occurring on thistles. 

 A. argentata is a very local species which occurs in scattered colonies 

 on the heaths around Woking and Chobham, and extends as far as 

 Bournemouth ; it burrows in exposed sandy spots, and is sometimes 

 accompanied by the rai*e little inquiline Noinada alboguttata. 

 July and August are the best months to look for it ; I have generally 

 found it flying backwards and forwards near its burrows, very close 

 to the ground, and consequently very difiicult to catch. The 

 Nomada flies more steadily and is easier to secure. Macropis lahiata, 

 which is a very local insect, and until Mr. Enock found it at 

 Woking, one of our greatest rarities, occurs annually along the 



