93 



Diaspis pentagona Targ. — amygdali, Tryon. 



On castor-oil plant, Rio Pedro, January 17. 



On uuknown tree, Bayaiuon, January 16. 



On peach, Adjunctas, January 24. 



On honey-locust, January 30. 



On mahagua, Fajardo, February 17. 

 Diaspis calyptroides Costa, var opuntiw, Ckll. 



Ponce, February 1. 

 Chioncispis citri Corast. 



On lime, Anasco, January 20. 

 Chionaspis (Hemicliionaspis) minor Mask. 



Ou eggplant, Catana, January IT. 



On G-uazuma uZmifolia, Guayama, February 4. 

 Ischnaspis longirostris Sign. 



On cocoanut palm, Caguas, January 11; Catania, January 12; Mayaguez, ..an- 

 uary 20 ; Arroyo, February 3. 

 Houardia biclavis Comst. 



On Bixa orellana, San Sebastian, January 24; Anasco, January 20. 

 This and the following five species were studied also by Mr. C. L. Marlatt. 

 Chrysomphalus aonidum Linn. — Jicus Ashni. 



On Terminalia caiappa, San Juan, January 5. 



On Anona muricata, San Juan, January 5. 



On oleander, Ponce, February 1. 



OnMusa, Caguas. (Some of this lot had theexuvhe very dark, black or nearly so.) 

 Aspidiotiis aurantii Mask. 



On Anona muricata, San Juan, January 5. 



On Anona muricata, Ponce, February 3. 

 Aspidiotus articulatus Morgan. 



On orange leaves, El Yunque, February 18; about 2,000 feet altitude. 

 Aspidiotus personatus Comst. 



On plantain leaves, Caguas, January 11. 



On Anona muricata, San Juan, January 5. 



On banana leaves, Catana, February 21. 



Ou cocoanut palm, Mayaguez, January 20; Caguas, January 11. 

 Aspidiotus destructor Sign. 



On banana leaves, Catana, February 21. 



On banana leaves, San Juan. January 5. 



On banana leaves, Arroyo, February 3. 



GENERAL NOTES. 



A DIPTEROUS ENEMY OF CUCURBITS IN THE HAWAIIAN ISLANDS. 



March. 13, 1899, we received from Mr. George Compere, Honolulu, 

 Hawaiian Islands, specimens of what is locally known as the melou or 

 cucumber fly. Our correspondent, writing under date of February 11, 

 1899, states that this is a very serious pest with vegetable growers, as it 

 destroys more than 75 per cent of the watermelons, cantaloupes, and 

 cucumbers grown in those islands. He writes, in substance, that the 

 parent flies are to be found at all seasons of the year, and that they 

 puncture the cucumber, which is the only plant on which our corre- 

 spondent has observed the species, on the upper side, and generally 

 near the stem end, this operation taking place when the cm cumber is 

 about half or two-thirds grown. In the punctures thus made they deposit 



