the island in 1911 (21-18, 29), 1912 (22-19, 20), and 1913 (28-251, 

 252, 253, 255, 256). (24-31.) 



Dr. E. P. Felt has described a cecidomyiid, Karschomyia cocci 

 (5-304), the larvae of which were taken by j\Ir. Van Dine in colo- 

 nies of Pseudococcus sacchari (?) on sugar cane. 



Chaetococcns hamhusac (]\Iask.). 

 Collected on "Bamboo" at Mayagiiez. 



Subfamily Coccinae. 

 Pulvinaria psidii Mask. 



This species is often very abundant on the "jobo" tree. Mr. 

 Tower reported it on orange and coffee. (16-38.) 



We have taken it as follows: On mango (Mangifera indica), 

 Rio Piedras; on guava or "guayaba" (Psidium guajava), Rio Pie- 

 dras and Luquillo; on hog plum or "jobo" (Spondias lutea), Arroyo 

 and Rio Piedras; on a tree, Banwolfia tetraphylla, Ponce. 



Ceroplastes ceriferus (Anderson). 



Collected on "almaeigo" {Elaphrium siniaruha) at Santa Rita, 

 near Guanica, and on "verba de San Martin" {Sauvagesia erecta) 

 at Naguabo. 



Ceroplastes cirripediformis Comst. 



Found on an undetermined plant at Algarrobo. 



Ceroplastes floridensis Comst. 



Taken by Mr. Busck "on A)iona reticulata.'' (2-92.) Mr. Bar- 

 rett records it in 1904 as an enemy of citrus stock (1-445) and Mr. 

 Tower in 1908 reported it "on the rose and orange." (]6-38.) It 

 has also been taken on Rapanea guianensis and Ficus laevigata at 

 Rio Piedras and on guava or "guayaba" {Psidium guajava) and 

 ■mango (Mangifera indica) at ]\Iayagiiez. 



Vinsonia stelUfera (Westw.). 



Tliis interesting scale, the so-called "star-scale," is often present 

 on the leaves of the rose apple, mango, and coconut. IMr. Busck 

 took it on the latter host at "Catana" (probably a misspelling of 

 Catano) and Arroyo. (2-92.) Later, in 1904, it is mentioned by 

 ]\Ir. Barrett as occurring "commonly on tlie coconut" (1-447), and 



