THE FAUNA OF SCOTLAND. 85 



1. C. ARATOR, Htg. 



Ceroptres arator, Htg., Ic. iii. 343; Mayr, Verb. z.-b. Ges. Wien^ 

 xxii. 721. 

 Rare — in galls of Andricus (nodnli) radicis — Kenmuir. 



Genus : PERICLTSTUS. 

 Periclistus, Foerster, Verb. z.-b. Ges. Wien, 1869, 337. 

 The species of Periclistus are inquilines in the rose galls of Rhodites. 



1. P. Brandtii, Ratz. 

 Gynips Brandtii^ Ratzburg, Berl. Jabrb. d. Pharm., 183, 2; Medic. 

 Zool. ii. 151. 

 Aulax Brandtiij Htg., Germ. Zeit. ii. 196. 

 Periclistus Brandtii, Mayr, Eur. Cyn., ii. 

 Rare — in galls of Rhodites rosae. 



2. P. CANINAE, Htg. 



Aylax caninae, Htg., I.e. ii. 196. 

 Periclistus caninae, Mayr, Eur. Cyn.. ii. 11. 

 Common in galls of RJwdites eglanteriae. 



Genus: XESTOPHANES. 

 XestopJianes, Foerster, Verb. z.-b. Ges. Wien, 1869; Mayr, Genera, 2K 



1. X. POTENTILLAE, Dc ViU. 



Gynips potent iliac, De Villaret, Lin. Ent. iii. 77. 

 Aylax splendens, Htg., Germ. Zeit. ii. 196. 

 Xestopliancs i)otcnt iliac, Mayr, Eur. Cyn., 10. 

 Forms irregular galls on stems of Potcntilla lormentilla. 

 Common near Milngavie and in Mugdock ; Dumfries. 



Genus : AULAX. 

 Aylax, Htg., Germ. Zeit. ii., 186. 

 Iscohis, Foerster, Verb. z.-b. Ges. Wien, 1869, 330. 

 Euhorthrus, Foerster, I. c. 331. 

 Lipostlicnvs, Foerster, I. c. 



The species of this genus raise galls on various plants (not treep).^ 

 None of them are dimorphic. 



1. A. HIERACII, Be. 



Cynips hicracii, Bouche, Naturg. d. Ins. 164. 

 Aylax scdmidi, Htg. , Germ. Zeit. ii. 195. 

 Aidax liieracii, Mayr, Eur. Cyn. , 8. 



Common, making polythalamous galls on different parts of various 

 species of Hicracium, chiefly on the stems and roots. 

 Possil, Carmyle, Milngavie. 



