1922. Johnson. — Diptera and Hymenopt ra at Poyntzpass. 67 



and striking contrast. I think it is unfortunate that two 

 insects of the same genus should have names so very nearly 

 alike as A. amatorius and A. armatorius, differing as they 

 do by merely a single letter, but the law of priority, like 

 Gallio, cares for none of these things. 



I was again successful in rearing Orthopelma luteolator 

 from Rhodites rosae. I picked the bedeguar in a hedge 

 by the roadside in September, 1920. 



I was quite glad to meet with so many of the pretty Pimpla 

 oculatoria, a species which I had not seen for some years. 

 It is said to prey upon spiders, laying its eggs among their 

 eggs and the resultant grub eating the eggs of the spider. 

 Mr. Morley^ gives a most interesting account of the larva, 

 which he found in the egg bag of the spider Epeira diade- 

 mata. I find that I have not taken this species since 191 2, 

 a period of nine years. How it eluded me for so long I 

 cannot understand. It must have been there, and it is 

 not an insect of a short period, for I took it at Carlingford 

 in June and at Poyntzpass in July and August, giving it a 

 period of three months on the wing. It is one more instance 

 of the extraordinary way in which insects can elude human 

 observation, as witness J. H. Fabre's search for Cleonus 

 ophthalmicus, the weevil which a hunting wasp {Cerceris 

 tiihevculata) was carrying to her nest frequently but of 

 which two days' search produced for him only three maimed 

 specimens {vide " Hunting Wasps," p. 34). ' 



DIPTERA. 



Pipiza bimaculata Meig. — Garden, April. 



Chrysogaster splendens Meig. "\ At Angelica, August ; the latter also in 



C. solstitialis Fallen, J July at Hogweed. 



Chilosia illustrata Harris. — Field, July. 



Pyrophaena rosarum Fab. — Field at Knapweed, August. 



Catabomba pyrastri L. — On Ragweed, 8.30-9 p.m., July. 



Syrphus balteatus De Geer. — Field, July. 



Sphaerophoria menthastri L. var., picta Meig. — Field by sweeping "\ 



Xanthogramma citrofasciatum De Geer. — Field at Angelica j "^"^ ■ 



Baccha obscuripennis Meig. — Flying round clematis, September. 



Volucella bombylans L. — Hill, July. 



1 " British Icheumons," vol. iii., p. 114. 



