Piedras, stated that they "agreed exactly with examples of Pseudo- 

 coccus calceolariae Mask.," his determination being based "upon com- 

 parison with typical examples received from the late Mr. Maskell 

 himself." (12-461.) Mr. Johnston records the fungus, Aspergillus 

 flavus, as occurring on this mealy-bug in Porto Rico. (11-14.) 



Pseudococcus citri (Risso.). 



Mr. Barrett mentioned this mealy-bug (as Dactylopius citri) in 

 1904 as an enemy of citrus stock with the note, "is not common." 

 (1-445.) Mr. Tower has published concerning it as a pineapple 

 pest (20) and Dr. C. W. Hooker mentioned its occurrence in coffee 

 plantations. (10-35, 37. )i 



I have taken specimens of a mealy-bug, which ]\Ir. Sasscer states 

 is close to Pseudococcus citri^ on the roots of three plants at Rio 

 Piedras. They were as follows: celery {Apium graveolens), corn 

 or "maiz" (Zea mays), and a grass, probably Sporoholus jaccpie- 

 montii. 



Pseudococcus mpae (Mask.). 



This is probably the most omniverous mealy-bug on the island. 

 It has been collected as follows: on coconut palm {Cocos nucifera), 

 Santurce; on guava or "guayaba" (Psidium guajava), on Anihu- 

 rium acaule, on sour-sop or "guanabano" {Anona muricata), on 

 "caimito" (Chrysopliyllum argenteum), and on Musa paradisiaca 

 var.,-^ Rio Piedras; on sea grape or "uvero" (Coccoloha uvifera) 

 and on "aguacate" {Persea gratissima) at Naguabo. 



According to Mr. Johnston, the fungi, Ceplialosporium lecanii and 

 Empusa fresenii, occur on this mealy-bug. (11-19, 21.) 



Pseudococcus sacchari (Ckll.). 



^lealy-bugs are important pests of sugar cane in Porto Rico and 

 practically all previous references regarding them are listed under 

 this species. Listed as Dactylopius sacchari/ it was taken by ^Ir. 

 Busck "on sugar cane" at Bayamon, Mayagiiez. and at Humacao 

 in 1899 (2-92), and it is recorded by ^Irs. Fernald from Porto Rico. 

 (6-109.) INIr. Van Dine published references to its occurrence on 



' Doctor Hooker stated that the ant, ili/rmelachista amhigua ramidnmm Wheeler, feeds 

 on the honey-dew secreted by this niealybue:. What is more interesting, however, is the 

 accompanying statement made by Doctor Hooker, regarding the connection between this ant 

 and ""a large, fleshy, pink scale of the subfamily Coccinae, probably as yet undescribed." 

 He observed that these Coccids "are carried by the ants into canals eaten out along the 

 pith of the smaller new growth which will bear the next season's fruit. The growth is thus 

 weakened to such an extent that when bent down by the pickers at the next harvest it 

 breaks easily." Much of the coffee is thus lost. 



- I have not tried to distinguish between the varieties of Muxa paradisiaca. commonly 

 known in English as bananas and plantains and in Spanish as "guineos" and "platanos."' 



