HYME NOP TE ROUS PARASITES OF RHYNCHOT A. 429 



Devon on July 2nd, 1884, and A. lonicerce, Marsh., from it on 

 the following day (Trans. Devon. Ass. 1901, p. 689). 



104. Aphis pteridis, ? auct.* 

 From an Aphid under this name Dalla Torre (Cat. iii.) tells 

 us that Eeinhard has hred Aphelinus enthria, Walk. 



105. Aphis medicaginis, ? auct.* 

 Three parasites, all apparently indirect, are said by Kieffer 

 to attack this species, or, more correctly, his Lygoceras aphidum 

 and L. subtruncatus are recorded from an aphis on Medicago 

 sativa, which we may suppose to belong here. The other Cynipid 

 is Alloxysta scutelLita, Kief. 



106. Aphis monarda, ? auct.* 



Howard tells us in his ' Eevision of the Aphelince of North 

 America ' (p. 24) that an Aphis of this name is attacked by 

 Aphelinus mali, Hald. 



107. Aphis primulce, ? auct. 



Both Dourst and Gaulle (Cat. 87) record Aphidius rufus, 

 Gour., as parasitic upon this species, which is not indicated by 

 Buckton, though probably the same as that mentioned by New- 

 man (Ent. Mag. 1836, p. 208) as inhabiting the cowslip, but not 

 primrose. 



108. Hyalopterus pruni, Fabr. 

 His Macrostigma aphidum is recorded from this species by 

 Eondani (Bull. Soc. Ent. Ital. 1874, p. 134 et I.e. 1877, p. 184). 



109. Hyalopterus arundinis, Fabr. 

 His Lygocerus antennalis has been mentioned by Kieffer as 

 preying upon Aphis arundinis (Andre, Spp. Hym. Europ.). 



110. Chaitophorus populi, Linn. 

 The only known parasite of this common species is Ilypsi- 

 camara ratzeburgi, as given by Eeinhard (Stett. Ent. Zeit. 1859, 

 p. 195). 



f Goureau's breeding of Ap>hidius rufus was, I believe, first published by 

 Dours (Cat. Hym. France, 1874, p. 81), and he ascribes the parasite to 

 Forster. Dours' hosts are so unreliable as a whole, however, and have 

 recently been so thoroughly revised by my friend M. de Gaulle, that I have 

 not troubled to examine his work, mainly culled from Goureauin this respect, 

 very closely. 



