NOTES ON HYMENOPTERA. 135 



dant round London, appear to be altogether gone from the 

 locality. Mr. Bold writes, " solitary bees appear to be 

 utterly extinct, or nearly so; the only ones I have seen 

 during the whole summer have been a strao:o^lino^ Solictus 

 or two ; brown Bomhi continue scarce, but JB. lucorum, 

 lapidarius, and hortorum are rather plentiful"— as regards 

 the appearance of the spring species of Andrenid(S, my own 

 experience tends very much to confirm Mr. Bold's observa- 

 tions, but only as regards the majority ; some species were 

 tolerably numerous last spring, Andrena Trimmei^ana is an 

 example. The summer species appear to have recovered, in 

 a considerable degree, the enormous reduction of their num- 

 bers which took place in 1860-61. 



Sjjhecodes subquadratus. — This extremely local species was 

 taken in some numbers at Birch Wood in July last ; since 

 the year 1849, I had not met with this insect; the capture 

 of a rare bee is now so much a novelty, that any new locality 

 for one is well worthy of being recorded. 



Halictus prasmus, a very local species, but extremely 

 abundant at Bournemouth and its vicinity ; I never saw an 

 example from any other locality ; August is the time of its 

 appearance ; the species does not appear to be known on the 

 Continent. 



Tenthredinid^. 



Croesus septenh'ionaUs. — In the first volume of the ^' En- 

 tomological Magazine," p. 313, is a notice of the larva of 

 this insect ; Mr. E. Doubleday there records the appearance 

 of the larvae in abundance on the hazel in July and August ; 

 they were so numerous, that young hazels were nearly stripped 

 of their leaves by them ; but, he adds, although the larva 

 are sometimes so abundant, yet I have rarely found the per- 

 fect insect. In the beginning of August last, namely the 



