>JQ [Maivb, 



1880, p. 324, the insect is described as Mytilaspis (?) pnndanni, n. sp., 

 and is said to have been collected upon Pandannis ; while in the 

 " Second Eeport on Scale Insects," 1883, p. 118, the name has been 

 altered to Mytilas'pis 'pandani (with one "w")? ^'^^ is said to occur on 

 Pandanus. The earlier name was presumably the result of a mistake 

 in the name o£ the food-plant. Prof. Cockerell is responsible for the 

 alteration in the generic name. 



[In the Palm House LicuaJa grandis, CaJamnus Leioisianiis, G., 

 and Chrysalidocarpus luteseens, Wendl., were dreadfully infested with 

 this pest, which is the most difficult of all the DiaspincB, in this 

 country, to eradicate. — R. N.] 



DiASPis BoiSDUVALii, Sign. — This was one of the most widely 

 distributed Coccids in the plant-houses. I found it occurring upon 

 the following plants, amongst others, Heliconia metaUica (from 

 Brazil), Nannorhops Ritchiana (from Afghanistan), ^chmea mexicana 

 (from Mexico), Pitcairnia hromeJuefolia (Cuba), P. Jatifolia and P. 

 alta, Bactris acanthocarpa, Euterpe speciosa. It appears to be parti- 

 cularly partial to monocotyledonous plants. The scales, ($ and ? , 

 occurred on both surfaces of the leaves, and varied in character 

 according to that of the surface upon which they were situated. 

 Where there was an epidermal layer of fibrous or scurfy matter, the 

 scales themselves were found to be similarly clothed. The natural home 

 of the species is uncertain ; it was originally described by Dr. Signoret 

 from examples affecting orchids in plant-houses at the Luxembourg. 



[In England palms are the favourite food-plant of this species, 

 but at Kew I only found it upon Cocos Romanzqffiana, Ch. — E. N.] 



Chionaspis aspidistra, Sign. — A few examples on Cocos plumosa 

 (from Trinidad), the insects affecting both surfaces of the frond. 

 The living ? insect was of a dull purple-red colour. Eggs and newly- 

 hatched larvae were present beneath the scale. The pellicles being 

 very transparent, the darker body of the insect was visible through 

 them. I found no ^ scales. The same insect occurred upon Heliconia 

 metallica. 



Lecanium HEMisPHiEKicuM, Targ. Tozz. — I fail to find any good 

 specific distinction between L. hemisphcericum, Targ. Tozz., L. coffece. 

 Walk., and L.Jilicuni, Boisd. Typical hemisphcericum appears to be 

 the larger form of the three, and usually of a darker colour. L. coffece 

 (as I know it from Ceylon) is of a brighter reddish tint, with more 

 distinct dark margins. L. filicum seems to be a still smaller and 

 slightly angular form occurring usually upon ferns. The derm-cells. 



