trpoN scale-insects. 43 



margin of the scale were just visible ; after two clays the first 

 conidiophores appeared, and after four to five days the whole 

 insect was surrounded by a fringe of hyphae bearing numer- 

 ous conidial heads (fig. 51 ). 



An example of Cephalosporins parasitic on Lecanium 

 hemisphcericum var. coffece on the stem of Jussicea suffruti- 

 cosa possessed a few perithecia. These were resting on the 

 peripheral part of the fungus, and were globular in 

 shape and pale yellow in colour. The long asci within 

 unfortunately showed no definite spore formation, and so 

 were most likely immature. However, their presence points 

 to the probability of this Cephalospoiium being a conidial 

 stage of some genus of the Hypocreales, to which group 

 nearly all the other Ascomycetous scale-fungi described be- 

 long. 



Before leaving this genus a remark is needed upon its 

 systematic position in the Fungi imperfecti. According to 

 the synopsis given in " Die Pflanzenfamilien "* Cephalo- 

 sporium is placed in a small group of genera characterized 

 by theconidia not being enveloped in mucilage, whereas the 

 neighbouring genus Hyalopus has its conidia so held to- 

 gether. The Ceylon forms and the Java one, according to 

 Zimmermann, possess mucilage, so on this classification they 

 should both be referred rather to Hyalopus. 



Grenus Hyalopus, Corda. 



A new scale fungus has quite recently been described by 

 Dopt who refers it to the genus Hyalopus. 



About 1902 the cocoanut palms of Martinique were severe- 

 ly attacked by a scale-pest, a species of Aspidiotus very 

 closely allied to the San Jose Scale {A. perniciosus). In fact 

 the pest assumed such alarming proportions as to threaten 

 the cultivation of these palms. Suddenly the insect received 

 a check, and in a comparatively short time disappeared. 

 Dop has shown this to be due to the rapid spread of a fungus 



* Teil I., Abtheil, I., pp. 417-1 1 > 



f Dop, Bull. Scient. France et Belgiqut'. XXXIX., 1905, p. 135. 



