so 
Psyche 
[April 
peculiar larval condition within the parent, and pupating at 
birth. The decrease in the number of birds will undoubtedly 
diminish these flies, which deserve a great deal of careful biological 
study, for our knowledge of the group is still very inadequate. 
The following records are in part based upon specimens in 
the Museum of Comparative Zoology, Boston Society of Natu- 
ral History, and the author’s collection. 
Ornithoica confluenta (Say). 
Ornithomyia confluenta Say, Jour. Acad. Nat. Sci. Phila., Ill, 
103, 1823. 
Ornithomyia confluens Wied., Auss. Zw., II, 611, 1830. 
Ornithomyia vicina Walker, List Dipt., IV, 1144, 1849. 
Ornithoica confluenta Speiser, Ann. Museo. Civ., NX (2d ser.) 
558, 1899; Ent News, XVIII, 103, 1907. 
Ornithoica confluens Aldrich, Cath, 655, 1905. 
Say recordedthis species from“ A rdea candiclissima,” — Snowy 
Heron ( Egretta candidissima) . No locality is given, and it may 
have been collected in “Pa.,” “or west of the Missouri River.” 
Wiedemann gives Pennsylvania. Walker’s 0. vicina was from 
“Jamaica, on Ephialtes gram??iicus” [Jamaica owl] (Gosse Coll.); 
also on Psittacus leucocephalus. Nothing further regarding the 
habits of this species appeared until 1878. Osten Sacken in his 
catalogue of Diptera, page 263, says: “ Ornithomyia confluenta 
Say will, I suppose, form a new genus, on account of its peculiar 
venation. An apparently diffierent species of the same group 
was found by Mr. Wm. Holden on Accipiter fuscus near San 
Jose Cal.” A study of this specimen in the Museum of Com- 
parative Zoology shows no character to separate it from specimens 
referable to O. confluenta. There are also in the above Museum 
four specimens from Cuba, one collected by Poey and three by 
Gundlach. There is in the old collection of the Boston Society of 
Natural History a specimen marked “Mass.” 
The latest and most interesting capture of this species was 
that of two specimens by Mr. W. S. Brooks at Wilson Mills, 
Oxford County, Maine, Nov. 4, 1921, from the Canada Jay 
