120 



the dorsal margin by the white groiind color of the wing which occupies nearly 

 the whole of the space beneath the fold ; the extreme costal margin at about the 

 middle is slightly speckled with grayish-brown; cilia grayish about the anal 

 angle, grayish-brown around the apex, with whitish interruptions along the costal 

 margin. 



Hind-wings, pale grayish, shining; cilia pale grayish-ochreous. 



Ahdomen, cinereous, anal tuft paler. 



Legs, dull whitish, tarsal joints faintly spotted. 



Exp. al., lO^'""!. 



Hah. 



Type, i 9 , Mus. Wlsm. 



This species is nearly allied to the European retinella, but has not 

 the same blotched appearance on the outer half of the fo-e-wings, the 

 more clearly defined spot on the fold and the marginal line around the 

 apex at ouce distinguishing it from that species. 



In addition to these I have single specimens of two undoubtedly dis- 

 tinct species, the one allied to the unmarked variety {ossea Hw.) of the 

 European nitidella, but with a slight golden gloss, taken near Crescent 

 (Jity, Del Norte County, Cal., the third week in June, 1872; the other 

 reminding me of what should be a small form of altissimella Chamb., 

 taken in Mendocino County, Cal., at the beginning of June, 1871. I am 

 not disposed to describe these from single specimens. 



EXTRACTS FROM CORRESPONDENCE. 



The Bermuda Peach Maggot and Orange Rust. 



Your letter of the 22d of July reached me a day or two ago. Since I last wrote 

 you I have occasionally looked for the Ceratitis, and not many days ago discovered 

 the pest among and lodging on some lime trees and fruit, also among the grape-vines. 

 So far as I know this insect does not injure the orange in these islands, and I should 

 be very much pleased to learn from you in your next in which way they injure the 

 fruit. We grow now very little fruit in this island, owing to diseases of one kind or 

 another. For instance, orange trees, bearing the most delicious fruit up to live or six 

 years ago, have ceased to produce fruit, and have died down limb by limb in one year, 

 then made a strong effort for life, sprung and started into bud, but died down again 

 with greater rapidity, and so on year by year until at the end of three or four years 

 they have died altogether. Can you explain this? Is the soil exhausted, or is it a 

 borer or tree lice which cause this death to the orange trees ? Before this trouble 

 the oranges would be covered with what is generally called rust, which is most un- 

 sightly, preventing the oranges from turning yellow, although the pulp seemed to bo 

 uninjured; but, so far as I know, no other injury has happened to the fruit except 

 the premature decaying of the trees, which T have endeavored to explain briefly in 

 the former part of this letter. The Surinam cherries ripen about June and the Man- 

 goes about September. The cherries have been very full of maggots, quite one-half 

 of the crop ruined. We have also another fruit, known as the Loquat or Malta plum, 

 which ripens in February, and this has also been infected to a greater or lesser ex- 

 tent. My father-in-law, Dr. T. A. Outerbridge, has had some peaches ripened this 

 season, which were most securely protected from the flies by the use of mosquito net- 

 ting. — [Claude W. McCallan, St. George's, Bermuda, August 6, 1890. 



Reply. — Your finding of the Ceratitis upon the lime trees and fruit is very interest- 

 ing and I hope you will watch the particular tree upon which you found them in 



