EXPLANATION OF PLATES. 41 



PLATE IV. 



Figs. 28-30. Aschersonia flavo-citrina. Cultures on sweet potato plugs, inoculated 



November 1, 1906, after 60 days. 

 Fig. 31. Verticillium heterocladum. Citrus leaf showing fungus pustules on 



larvae of Aleyrodes citri. 



PLATE V. 



Fig 32. rcrticillium heterocladum. Culture in test-tube on bread. 



Fig. 33. Verticillium heterocladum. Culture in test-tube on Irish potato plug. 



Fig. 34. Verticillium heterocladum. Culture on glucose agar, showing brown 



pustules. 



Fig. 35. Verticillium heterocladum. Leaf of privet bearing larvae of Aleyrodes 

 citri infected with the fungus by means of a citrus leaf containing pustules. 



PLATE VI. 



Fig. 36. Sphaerostilbe coccophila. Sporodochia of the fungus on bodies of 



Aspidiotus hederae, on Chinaberry twig. 

 Fig. 37. Sphaerostilbe coccophila. Sporodochia of fungus on bodies of Mytilaspis 



citri co la on citrus twig. 

 Fig. 38. Sphaerostilbe coccophila. Perithecia of fungus on Mytilaspis citricola 



on bark of citrus. Twice natural size. 

 Fig. 39 and 40. Microcera sp. Cultures on rice showing loose fluffy growth on 



top of medium. Natural size. 

 Fig. 41. Microcera sp. Citrus leaf with larvae of Aleyrodes citri infected with 



the fungus. The fungus is shown by white fringes on the edges of a number 



of the larvae. 



PLATE VII. 



Fig. 42. The Brown Fungus of Webber. Citrus leaf with brown pustules that 



have formed on larvae of Aleyrodes citri. (Photographed by H. H. Hume.) 

 Fig. 43. Cladosporium sp. A super-parasite found growing over Aschersonia, 



flavo-citrina on leaf of citrus. 



