330 RIDDLE: NOTEWORTHY LICHENS FROM JAMAICA 
5. MEGALOSPORA PREMNEELLA (Muell. Arg.) Zahlbr.; Engler & 
Prantl, Nat. Pflanzenfam. I*: 134. 1905. 
Patellaria premneella Muell. Arg. Lich. Epiphyll. 5. 1890. 
Specimen examined from Brazil (type!). Endemic. 
Explanation of plate 21 
ll figures were drawn with a camera-lucida: Fics. 1, 2, and 3, at a uniform mag- 
nification of 41 diameters; Fics. 4-10, at a uniform magnification of 385 diameters. 
The plate has been reduced a one half in reproduction. Brown or 
black coloration is indicated by stipplin: 
Fic. 1.. Vertical section of seeretotre of Buellia rinodinospora Riddle. 
Fic. 2 ertical section of apothecium of Graphina platygrapia Muell. Arg. 
Fic. 3. Vertical — of spotberiin of Chiodecton leiostictum Riddle. 
Fic. 4. Spore Riddle 
Fic. 5. Spore ia Chiodecton lctbsticum Riddle, ‘with nvelope 
Fig. 6. Spore of Graphina platygrapta Muell. Arg. ord cals gommiidingrenemuntie! 
Fic. 7. Spores of Megalospora ehicn a Mey. 
Fic. 8. Spores of Megalospora Cummingsiae Poke 
40+ 
Spores of pete ona versicolor (Fée) Zahlbr. 
Fic. 10. Spores of Megalospora sulphureorufa (Nyl.) Riddle. 
