FUNGOID GALLS. WS3 



presumedly a species of saw-fly; and he speaks of 

 the white central part of the gall "enveloping a 

 solitary egg, and that subsequently, when this 

 hatches, the larva begins to feed on the surround- 

 ing matter, thus gradually forming a chamber round 

 itself." This, however, is mere imagination, and an 

 examination of some fresh galls has convinced 

 me that the structures owe their origin to an 

 Exohasidium. I have found the galls near Dumfries, 

 and they have also been recorded from Colvend and 

 Aboyne; cf. Trail, Scot Nat ii. p. 251. They have 

 likewise been recorded from Switzerland. 



2. On Juncus. — The gall-like tumours on the roots 

 of Juncus, recorded as British for the first time by 

 Prof. Trail in Scot Nat i. (New Series), p. 241, I 

 have found on Clober Moor and near Thornhill. My 

 specimens were on Juncus squarrosus, L., and J. 

 uliginosus, L. Trail discovered his on J. bufonius, 

 and Prof. Balfour found them near Glasgow • on 

 what was probably J, lamprocarpus. These tumours 

 owe their origin to Entorrhiza cypericola, Weber. 

 Almost identical tumours I have seen near the 

 Brother Loch on Eriopliorum vaginatum on the 

 stem quite close to the roots. 



3. On Ruppia inaritima, var. rostellata. — For 

 these galls I am indebted to Mr. D. A. Boyd, who 

 discovered them on the shore near West Kilbride. 

 They are pea-shaped (or rather potato-shaped), but 

 rather irregular in shape, have a diameter of from 

 2 to 3J lines, are greenish or yellowish in colour, 

 but when mature become brownish. They are 

 parenchymatous, and dark brown in the centre, 

 with a more or less clearly defined cortical layer, 

 which is much lighter in tint, probably owing to 

 the large number of intercellular spaces. The 

 spores are in fours, have colourless membranes, and 

 are situated in the cells of the inner portion. 



The species was only described last year by Herr 

 Ooebel, who found it on Ruppia rostellata, and has 



