116 



goes produced in the Philippines. It would be a catastrophe im- 

 measurable if the mango pests of Singapore were introduced into 

 the rhili])piiies. 



Among the mango pests of Singapore, three are very cons- 

 picuous, one insect — a psyllid, — and two fungi. The psyllid pro- 

 duces a leaf gall the size of a small pea, and these are sometimes 

 so nnmerons as to occupy a large part of the surface of the leaf. 

 When the jnsect is mature, the gall splits open at the top, the 

 acute segments recurving. These insects secrete considerable quan- 

 tities of honey-dew, and this may account for the astonishing 

 growths on the same and neighbouring leaves of a sooty black 

 fungus, Meliola luangiferae Earle. This fungus was described from 

 Porto Rico but has been found to be practically pantropical in dis- 

 tribution. Between the psyllid and the fungus, the leaf has little 

 chance of performing its natural function. 



Certain trees which have escaped the psyllid and the Meliola 

 may have practically every leaf scattered thickly with the small 

 Teddish brown nodules of an extremely serious fungus pest, Zimmer- 

 mannieUa Irisjiorn P. Tlenn.. and under tliis load the leaf soon dies 

 and falls. 



The investigation of these pests should proceed from two 

 points, first beginning M'itli the psyllid, and second to determine 

 the degree of parasitism in tlie ZimmermannipJla. It is entirely 

 probal)le that remedies can be devised to control these and keep the 

 trees clean and healthv. 



C. F. Baker. 



FUNGI FROM SINGAPORE AND ALSO 

 FROM PENANG. 



" Fungi Singaporenses Bakeriani." 



[Tlie following enumeration is of fungi, collected with two 

 exce])tions. by Professor I". F. Baker during his short service with 

 the Govermnent of the Straits Settlements: and enumerated 

 by Prof. Saccardo in the Bulletino del Orto Bot-anico Peale di 

 Xapoli. Vol. A"I, (1918) at the pages given after each name. In 

 the Journal of the Eoyal Asiatic Society, Straits Branch, Xo. 78, 

 1918. ])p. 67-72, will be found descriptions of sixteen others under 

 the title of So)iu> SitKinpore Bolpfinae — a joint paper by M. X. 

 Patonillard and Prof. C. F. Baker: and again in the Bulletin de la 

 Societe Mycologi(iue de France XXXIV, 2e fasc. is described by M. 

 Patonillard a further fungus Echinodia TJteohromae from dead 

 Cacao branches in Singa})ore.] Ed. 



PrcciMA CLAVisi'oijA Ell. and Barth. Singapore Gardens, 



on Andropogon nardux v. cilronella 

 Akcidium BALAXS-i: Cornu. Penang. Government Hill, on 



Agatliis alba (Burkill) .. 

 Aecidium cassi-E Bres. Singapore, Tanjong Pagar, on 



Cassia lorn (Burkill) 



