THE FAUNA OF SCOTLAND. 45 



The gall-making saw-flics stand much in need of a thorough revision. 

 In the present conflicting state of the descriptions and nomenclature, it is 

 almost impossible to identify our species with any certainty. And a 

 revision, to be of much use, must embrace all the North European species; 

 not only a comparison of the various descriptions, but also an examination 

 of large series of bred specimens from all parts of the Continent. 



CRYPTOCAMPUS, Hartig. 



1. C. PENTANDRAE, Retz. 



= medullarius and foindi, Htg. 



Common, but rather local. Imago in May. Larva in large, irregular, 

 more or less globular galls, on the twigs of various willows. 

 Kilpatrick hills, Dairy, Dumfries (Dr Sharp). 



2. C. sALicETi, Fall.; sec. Thorns. 



= mucronatus, Htg. 



Very common. Imago in May. Larva in the young twigs of various 

 willows. 



Cannisburn, Milngavie, Gleniffer, Dairy, Glen Moriston, Kintail. 



Rannoch, Glen Lyon, Braemar, Kingussie, Strath-Glass, Sutherlandshire 

 (Altnaharra and Bonar Bridge). 



This species varies very much in the coloration of the legs, and also in 

 the antennae and mouth. The form with the legs entirely pale, i.e., without 

 any black markings, is the rarest. 



3. C. ANGUSTUS, Htg. 



Not so common, but of similar habits to saliceti. 

 Rannoch. 



CIMBICINA. 



CIMBICIDES. 



CIMBEX, OUver. 



1. 0. SYLVARUM, Fab. 

 = hetulae, Zaddach. 



Common in June. Larva from end of July to September, on birch. 

 Clober, Bishopton, Paisley. 



Rannoch, Glen Lyon, Braemar, Kingussie, Strath-Glass, Lairg, Suther- 

 landshire. 



2. C. FEMORATA, Fah. 



Rare. Imago in June. Larva in the autumn, on Salix. 

 Rannoch. 



