PLATE IX. 
Pertusaria pocillaria sp. nov. 
Fig. I. Portion of fruited thallus (X®)- c > CU P formed by the evacuation of the 
asci. 
2. Vertical section of thallus and apothecia (X24). 
3. Vertical section of apothecium (X 96 )- 
4. Asci and paraphyses (X 187). 
5. Spores (X 375 )• 
The figures are drawn from specimens collected by Dr. Trelease at Farragut Bay. 
(no. 806a.) 
