Stirton. — Lichens of Province of Wellington. 237 



convex when mat^^red, with a proper margin of same colour, and an elevated 

 crenated thallodal margin, which is often separated from the former by a 

 chink, pale within ; hypothecium pale brown ; epithecium brownish j 

 paraphyses matted together at apices ; spores eight, simple, ellipsoid, or more 

 frequently one or other, or both apices acute ; mai'gins distinctly crenulate, 

 moderate (-014 x -OOSmm). 

 On stones, Wellington. 



Squamaria thaumasta, Stirton. 



Thallus greyish white, tesselato-areolate, consisting of roundish umbonate 

 particles closely set together, and yet quite distinct ; cephalodia large, reddish 

 ^rown, cracked in a radiating manner, and roundly lobed at the circumference ; 

 apothecia small, elevato-sessile, concave, reddish brown, rugose, with an 

 elevated, smooth, inflexed border ; spores eight, colourless, broadly elliptical, 

 uniseriaij one-septate. A beautiful lichen, and one that might constitute the 

 type of a uew genus. 



On rocks and stones, Tinakori Hills and Kaiwarra Creek, Wellington. 



Squamaria gelida, Linn. 



The apothecium of this lichen is differently constituted from that in. 

 Britain, inasmuch as the thalline exciple resembles the cup of the acorn, while 

 there is a proper border, smooth and prominent, surrounding the epithecium, 

 which is itself white, pruinose, and rugose. I can see, however, little 

 difference otherwise to warrant a separation. 



On rocks and stones, Kaiwarra Creek and Hutt Road, Wellington. 



Thelotrema ohovatum, Stirton. 



The spores of this lichen differ in shape from those of Th. lepadinum, and 

 have altogether an appearance so peciiliar that I have been tempted to elevate 

 it into the rank of a species under the name given above. Thallus yellow, 

 rimulose, uneven, slightly nodulated ; apothecia hemispherical, crowded in 

 some parts ; ostiolum rounded, open, margin even ; disk urceolate, scutilli- 

 form, dark brown, proper margin inflexed ; spoi-es eight, colourless, obovate, 

 sharp pointed at one end, rounded at the other, divided internally by 

 numerous crossbars, which do not reach the margin ; epispore beautifully 

 crenulated. 



These characteristics are constant, at least in every specimen examined. I 

 have not seen T. subtile, but, judging from the description of it byLeightonin 

 his Lichen Flora, I cannot reconcile myself to identifying the present plant 

 with it. 



On bark of trees, Tinakori Hills, Wellington. 



Lecidea Jcelica, Stirton. 

 Thallus greyish white, thin, minutely rimuloso-areolate; areolae smooth, 



