The Scottish Naturalist. 203 



Saxicola ? prope Somerset East in Africa australi, a cl. P. 

 MacOwan lecta. 



The specimen is small, and so far the diagnosis of the thallus 

 is imperfect. So abundant is the colouring matter, that the 

 epithallus moistened with K, shows an after purplish -red 

 reaction. 



Pannelia testacea sp. nov, — Thallus pallescens vel pallide cinera- 

 cescens vel etiam pallide cervinus, centro squamulosus vel 

 crustoso - squamulosus, radiato - laciniatus, laciniis ssepius 

 oblongis et lobato-divisis, adpressulus (K fl. dein rubens), 

 subtus niger breviter nigro-rhizinosus ; apothecia subcon- 



, coloria, testacea vel demum hepatica, sessilia, plana majus- 



cula (latit. 4-20 mm.) rotundata, plerumque lobato-incisa 



• (praesertim seniora), receptaculo extus rugosulo et margine 



fere integro ; sporae ellipsoidese, .013-.018x.0085-.01 mm. 



Spermatia bifusiformia, .006-.007 x .0007-.0008 mm. 



Ad saxa? prope Wellington, N.Z. (J. Buchanan). 



( To be continued. ) 



SCOTTISH GALLS. 



By J. W. H. TRAIL, M.A., M.B., F.L.S. 

 {Continued from page 170.) 



TILIA EuROP^A L. — A few weeks ago I received from Dr 

 Buchanan White leaves of a lime-tree (apparently T. 

 grandifolia, Ehrh.) picked up by him at Dunkeld towards 

 the end of October, on which were numerous nail-galls, the 

 work of a species of gall-mite {Phytoptiis tilice). They are 

 scattered irregularly over the upper surface of the leaf, from 

 which they project at right angles, and are more or less 

 spindle - shaped, tapering slightly towards the base, and 

 considerably towards the apex, which is turned to one 

 side ; they may reach Y3 x Y^^^ inch in size, but are usually 

 rather smaller. The surface is smooth or slightly furrowed, 

 pubescent, and is green, yellowish-brown, or red in colour. 

 On section, the gall is found to contain a central elongated 

 cavity, opening on the lower surface of the leaf by a small 

 hole nearly closed with short yellowish hairs, among which 

 the mites live. These galls are common in many parts of 



