PSYCHE 
VOL. XXXII. DECEMBER 1925 
No. 6 
NOTES ON HIPPOBOSCID.E. 
1. Lynchia Weyenbergh and Lynchia Speiser are not 
Congeneric. 
By J. Bequaert, 
Department of Tropical Medicine, Harvard Medical School. 
While attempting to identify a hippoboscid obtained in 
Brazil, I was struck with the considerable disparity in size be- 
tween Lynchia penelopes Weyenbergh, the type of the genus 
Lynchia, and the other species subsequently placed by Speiser in 
Lynchia. A closer study of the original description of Lynchia 
brought me to the conclusion that Weyenbergh’s species does 
not fit the generic diagnosis of Lynchia, as drawn up by Speiser 
and accepted by subsequent investigators. 
Briefly stated, Speiser’s genus Lynchia is characterized in 
the first place by the absence of the anterior basal cross-vein 
(M 3 ) : “das Geader dadurch auffallend und charakteristisch, dass 
die hintere Basalzelle ganz offen ist, die hintere Querader total 
fehlt.” Such is the case with Olfersia maura Bigot, Olfersia 
lividicolor Bigot, and other related species. But it is not true of 
Lynchia penelopes, which, according to Weyenbergh’s descrip- 
tion, has the second basal cell (M) closed by a cross-vein. 
I subjoin a translation of Weyenbergh’s original, since it is 
inaccessible to most students. In order to make the author’s 
meaning quite clear, I have inserted in brackets the names of 
the veins as used by most modern writers and also the corres- 
ponding symbols in the Comstock-Needham system. For the 
latter, I have accepted Ferris and Cole’s interpretation of the 
hippoboscid wing (1922, Parasitology, XIV, p. 195, fig. 12.) 
