BY D. McAbPIN'E. 481 



which are often branched, and usually opening at the apex with 

 a large fringed orifice. These are seated upon and amongst a 

 dense subiculum of closely jointed or moniliform black hyphte, so 

 as to form large velvety patches, and are possibly, in some 

 instances, the more complete developments of mould belonging 

 to the genus Fumago." The accompanying figure of Captiodhim 

 elovgatum, B. & D., with the spores leaves no doubt as to the 

 pycnidium being meant. The pycnospores have a certain I'esem- 

 blance to the sporidia, but the latter have more septa, and of 

 course are contained in asci (figs. 1-12). 



Armadale Specimens. — Abundant examples were met with in 

 my own garden, but only immature forms of perithecia were 

 found. One side of the solitary orange-tree was decidedly less 

 attacked than the other, and it was the most exposed and that 

 which received most of the sun, the sheltered side receiving less 

 of the sun being by far the worst. 



Colourless and coloured hypha? similar to the preceding were 

 met with, and gonidia, gemmae, glomeruli and antennaria foi'ms. 



Mycelium and Gonidia. — On the surface of a leaf only slightly 

 attacked, numerous colourless to pale green creeping hypha? were 

 found, very irregular in outline, with very few septa and averaging- 

 s' ^ in diameter. Also numerous similarly coloured, oval to 

 elliptic, continuous or uniseptate, and slightly constricted gonidia. 

 The colourless hyphje were generally branched, septate, thin- 

 walled, and either with elongated or moniliform joints, and the 

 gonidia were continuous, uni- or bi-septate. The dark coloured 

 hyphag were generall}'^ closely septate and constricted at septa, 

 branched, thick-walled, and stouter than the colourless. The 

 gonidia were usually uniseptate or in moniliform chains. 



Gemmie,. — The colourless and dark brown clusters of cells wei'e 

 met with germinating, also the mulberry-like clusters of gi'een 

 cells. 



Glomeruli. — These were in great abundance, and showed the 

 green clusters of cells composing the wall, and the large and 

 small colourless cells inside imbedded in mucilage, and often 

 connected l)y an isthmus. 



