SHORT NOTES. 229 



would be as gfood fertilizers, and it would appear that were the 

 lip immobile the Grammatophyllum would secure the use of all 

 three insects and avoid the loss of flowers through the removal 

 of the honey without fertilization. The carpenter bees are 

 thus harmful to this orchid, as it is to other flowers. By 

 persistently tearing Open the base of the corolla tube of Ipomea 

 palmata to get the honey instead of pushing into the corolla 

 mouth it effectually prevents this plant from being fertilized. 

 A considerable number of flowers, especially of introduced 

 plants, never set seed, for various often obscure reasons. In 

 some cases however the failure is certainly due to the actions of 

 insects who though taking pollen or honey fail to put the pollen 

 on the stig'ma. An example is that of Clerodendron macrosiphon a 

 native of Zanzibar. It is a shrub with long tubular white flowers 

 with long projecting stamens. The flowers are evidently in- 

 tended for fertilization by hawkmoths, but as it opens its flowers 

 too early for them they are spoilt by the small Trigona bees 

 who assiduously go round to each stamen and collect all the 

 pollen, without touching the stigma, so that the plant has 

 never so far as I have never seen here produced a single fruit. 



H. N. Ridley. _ 



Errata in " Descriptions of New Species of Iphiautax 

 and Cbaolta i^Braconidae) from Sarawak Borneo. 



(Volume 42). 

 p. 26, 6th line from bottom for " and costa " read " and stigma " 

 p. 27, 8th line from bottom after " length" add 5 

 p. 32, at commencement of 6th line from foot add " of radius " 

 p. 33, 14th line from bottom. After •' apex " add 9 . 

 p. 36, 7th line from foot for " later " read " lateral " 

 p. 37, 11th line from top for " Veneus " read " oenens" 

 p. 38, 16th line from foot after " crenulated " add " ? " 

 p. 40, 14th line from foot add Iphiaulax nitidiusculus sp. n. 



R. A. Soc, No. 44, 1905. 



