The Scottish Naturalist. 20 t 



from the two hemispheres must remain doubtful. Meanwhile, 

 acting under the impression (which Nylander certainly leads one 

 to infer) that the specimens he has seen have bifusiform sper- 

 matia, I have separated the plants of the southern hemisphere 

 from those of the northern. 



In the estimation of the dimensions of the spermatia, I have 

 been favoured with the improved microscopic appliances in the 

 possession of Mr A. Schulze of Glasgow, including Ross's i/io 

 immersion objective, and Powell & Lealand's new formula 1/8, 

 with B and C eye-pieces. They have also been viewed with 

 oculars up to 2000 diameters. Those spermatia designated 

 cylindrical do not betray the slightest tendency towards a bifusi- 

 form or subiageniform configuration. 



It should also be stated that the breadth of each spermatium 

 is only given approximately. 



* 



Pa7'inelia reparata sp. nov. — Sat similis P. perforatce sed thallo 

 firmiore et minute reticulato-diffracto sporisque late ellip- 

 soideis, .013-.014 x .009-.011 mm. Spermatia recta exacte 

 cylindrica, .011-.014 (interdum .015) x circ. .0007 mm. 



Apud Cave Mountain prope Brisbane in Queensland, a F. M. 

 Bailey lecta, et prope Wellington, N.Z. (J. Buchanan). 



In this view of the spermatia of this lichen, F. Owaniana., 

 described in the ' Trans, of the Glasgow Field Nat. Soc.,' pub- 

 lished in September of 1877, approaches closely to it. 



Pa7-melia eruhescens sp. nov. — Thallus pallide rufescens vel rufes- 

 centi-cervinus, laciniato-lobatus, laciniis rotundatis margine 

 crenatis vel crenato-incisis et nigro-ciliatis, subtus totus fus- 

 cescens vel spadiceus et breviter sed creberriter nigro-rhizin- 

 osus ; medulla pallido-albida (K fl. dein rubens) ; apothecia 

 ignota; spermogonia innata extus nigra spermatiis exacte 

 cylindricis, rectis, .008-.01 x circ. .0005 mm. 



Prope Brisbane supra ceeteras Parmelias (F. M. Bailey). 



Although closely allied to P. perforata, the differences as indi- 

 cated above are quite sufficient to warrant a separation. The 

 colour of the thallus seems normal and not induced, as we see 

 occasionally in P. perforata, by extraneous influences. The mar- 

 ginal cilia are much thicker and longer than the rhizinae, which 

 are finer than usual. 



Parmclia amplectens sp. nov. — Thallus pallidus vel albido- aut 



