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Psyche 
[December 
NOTES ON HIPPOBOSCIDiE 
3. HlPPQBOSCIDiE OF YUCATAN 
By J. Bequaert 
Department of Tropical Medicine 
Harvard University Medical School 
The following notes are based mainly upon material ob- 
tained in 1929 and 1930 by the Expedition to Yucatan, 
organized by the Department of Tropical Medicine of Har- 
vard Medical School, under the auspices of the Carnegie 
Institution of Washington, D. C., and under the leadership 
of Dr. George C. Shattuck. In Yucatan the Hippoboscidse 
are of peculiar interest, inasmuch as one species has been 
suspected or incriminated as the vector of a human disease. 
Subfamily Olfersiinae 
Olfersia coriacea van der Wulp 
Olfersia coriacea van der Wulp, 1903, “Biol. Centr.-Amer.,” 
Dipt., II, p. 430, PL XIII, figs. 2 and 2 a (described 
doubtfully as $ ; according to Austen, both specimens 
seen by v. d. Wulp were males; in part: only the 
specimen from Mirandilla, Guatemala). 
Pseudolfersia coriacea Austen, 1903, Ann. Mag. Nat. Hist., 
(7) XII, p. 265 (selects van der Wulp’s male from 
Mirandilla as the holotype; states that the male from 
Presidio, Mexico, is Olfersia propinqua Walker). 
Aldrich, 1905, “Cat. North Amer. Dipt.,” p. 656. 
Speiser, 1907, Ent. News, XVIII, p. 104. 
Pseudolfersia meleagridis Lutz, Neiva and da Costa Lima, 
1915, Mem. Inst. Osw. Cruz, VII, p. 179, PL XXVII, 
