43 



thecium conical, oblique, black ; amphithecium blackening ; para- 

 physes distinct. Spores muriform, brown. Thallus indistinct. A 

 small genus of tropical lichens on bark. 



Genus 76. Steigdla Fr. Apoth. prominent, depressed-globose ; 

 perithecium black ; amphithecium pale or blackening ; paraphyses 

 distinct. Spores simple, or 2-4 loc, colorless. Thallus epiphyl- 

 lous, passing finally into a lobulate crust. A small genus of tropi- 

 cal lichens, growing upon leaves. 



Note. — The first fascicle of Vol. II. of Nylander's Synopsis Llcheiium, 

 hicludlug the Pyxinei, Gyrophorei, Psoromei, and Panijariei, is to he 

 added to the list of his works on p. 29. 



As the plates were not prepared until a portion of the forms had been 

 printed, they could not be referred to in the text. It is hoped that the 

 accompanying letter-press will be sufficient for their explanation. 



