88 
Psyche 
[March- June 
NOTES ON HIPPOBOSCIML 19. ADDITIONS TO THE 
LARGER SPECIES OF LYNCHIA , WITH DE- 
SCRIPTIONS OF TWO NEW SPECIES 1 
By J. Bequaert 
Department of Comparative Pathology and Tropical Medicine, 
Harvard Medical School and School of Public Health 
Material of the larger species of Lynchia studied since the 
publication of my earlier paper in 1933 (Psyche, XL, pp. 68- 
82) has led me to modify some of my conclusions. Lynchia 
wolcotti Swenk appears to be a valid species and is here recog- 
nized as such. The African fly formerly referred to L. palustris 
was misidentified and is now described as a new species. An 
additional new species of this group is described from Ceylon. 
The following emended key supersedes that published in 
1933. 
1. Mesonotum and disk of scutellum densely and fairly uni- 
formly covered with soft, short hairs, directed backward; 
scutellum without median longitudinal groove. Frons 
very wide; inner margins of eyes distinctly converging 
below; postvertex very short and wide, about one-fourth 
to one-third the length of mediovertex; frontal bristles 
numerous, in several irregular rows. Palpi short, at most 
as long as fronto-clypeus. Wing membrane bare over 
much of the basal two-thirds (more extensively in the 
female than in the male). Subcosta (Sc) usually com- 
plete, ending in costa. Wing 5.5 to 7 mm. long. L. pilosa. 
Mesonotum almost bare, except for narrow patches of long 
hairs behind the humeral callosities and before the scutel- 
lum; scutellum with only a few lateral setae and apical 
fringes of soft hairs, the disk mostly bare. Palpi at least 
as long as fronto-clypeus. Upper side of wing mostly 
covered with microtrichia; only the axillary cell (2d An) 
or that cell and the hind fourth to half of the anal cell 
(Cu+lst An) bare 2. 
2. Upper side of wing with only the axillary cell (2nd An) 
mostly devoid of microtrichia. Subcosta (Sc) usually 
1 Published with the aid of a grant from the Museum of Comparative Zoology 
at Harvard College. 
