86 ANNALS OF SCOTTISH NATURAL HISTORY 



of Contarinia pirivora, Ril., which lives on the pear. Cf. 

 Kieffer, " Ann. de la Societe scientifique de Bruxelles," xxx. 

 123-125. 



PLATYGASTERINI. 



This group contains some insects of great economic importance, 

 if of very minute size. Ceddomyia tritid, Kirby, the destructive 

 wheat midge, is preyed upon in England by Platygaster tipida, and 

 Kieffer describes two species of Platygaster (P. longicaudatus and 

 P. brevicaudatus} besides Trichatis remains, Walk., as parasites of 

 Mayetiola (plim Ceddomyia] destructor, Say, in France. 



PLATYGASTER, Latr., sec. Foer. 



1. enneatomus, K., Bishopton ; Bonar Bridge. 



2. parallelus, K., Banks of Clyde at Newton. 



ISOCYBUS, Foer. 



1. ascetidens, K., Fossil Marsh; Gadder Wilderness, near Glasgow. 



2. compressus, K., Bishopton ; Dumfries ; Colvend. 



3. trochanteratns, K., Loch Awe ; Glenelg, Inverness-shire ; 



Gadder ; Colvend. 



4. pyramidalis, K., Kenmuir, on the Clyde ; Clober Moor, 



Dumbartonshire ; Dumfries. 



5. horizontalis, K., Gadder; Ballantrae ; Bishopton: Claddich, 



Loch Awe ; Rannoch ; Glenelg ; Bonar Bridge. 



6. Cameroni, K., Clyde at Newton. 



AMBLYASPIS, Foer. 



1. rufiventris, K., Island of Mull. 



2. rufistilus, K., Galloway ; Bonar Bridge. 



3. vitillinipes, K., Manuel. 



- f 4. tritid, Hal., Bishopton. This is the parasite of the destructive 



wheat midge. 

 5. tripartitus, K., Dumfries. 



POLYCTNOTUS, Foer. 



1. convcrgens, K., Cadder. 



2. tuberous, Thorns., Kingussie. 



3. rufimanus, K., Mugdock, from galls of Hormomyia juni peri net, 



L. 



4. scoticus, K., Bonar Bridge, Clydesdale ; Dumfries. 



SYNOPEAS, Foer. 

 i. xanthopus, K., Dumfries. 



