VI. 



NOTES ON COCCID^ BY J. H. HART. 



Peofessor Cockekell has asked me to add a few particulars as to 

 " locality, abundance and destructiveness of the Coccidse" in the preceding 

 list. 



1. Icerya montserratensis, E. & H. — Found on Clusia, Eose and Livis- 

 tona chinensis. It is a very handsome species but it does not appear to do 

 any great harm at present. It is the white insect which may be seen on the 

 twigs of the trees of Clusia planted in " Almond Walk," Port-of-Spain. 



2. Icerya rosce, B. & H. — Found on Amlierstia, Bassia, and Mimusops 

 always with a small ant on all Garden plants. It apparently loves con- 

 cealment as in the first instance, it was covered with earth on the base of 

 the stem of the tree and in the latter two cases it was in the covered runs of 

 a small ant Azteca-chartifex, n. sp. Forell. 



3. Dahjlopius saccJiari, Ckll., n. sp. — A mealy bug commonly affecting 

 the sugar cane, but the damage that it does is not readily apparent to any 

 but the closest observer. It is without doubt higlily prejudicial, and it 

 should be exterminated where possible. 



7. Phenococctis Barberi, Chll. — This is very common on Hibiscus of 

 many varieties growing m the Botanic Gardens. 



9. Orthezia x>rcelonga, Douglas. — A very common species on Crotons 

 (codieuvis) of all kinds, especially in arid ground, but it may be removed by 

 a wash made of tobacco and soap. 



11. Asterolecanium aureum, Boisd. — This was found on leaves of Hip- 

 peastnum cultivated under glass. It is commonly destroyed when nearly 

 mature by a white fungus, which has lately been sent for determination. 



13. Asterolecanium miliaris, Boisd. — This is very plentiful on bamboo 

 stems near an old rubbish depot on lands at Belmont near the Gardens. 



18. Lecanium nanum, n. sp. — Interestmg as the inhabitant of the runs 

 of the same ant as Icerya rosce (see No. 2), but apparently does little 

 damage. 



25. Vinsonia stellifera, Westw., is a fairly common scale and is a great 

 trouble on pot plants. 



29. Cliionaspis citri, Comst., is a great pest, but parasitic fimgi, and 

 heavy rains are antagonistic to its spread, and it does not appear to make 

 much progress where the plants have plenty of vitahty. 



30. CJiionasjpis biclavis, Comst. — This was found on the stem of 

 Flacourtia Bamoutchi, the well known " Governor Plum." It having found 

 an apparently congenial home on the large and thorny compound spines 

 which cover the stem of that plant. 



32. Finnaspis imndani, Comst., is a great pest on palms which are 

 natives of a cooler climate than ours. 



33. Mytilaspis citricola, Pack., common on orange fruits in St. Anne's. 



34. Ischnaspis filiformis, Douglas, is a great trouble to us on Cycas and 

 several Palms and Aroids, 



