A. C. OUDEMANS, NOTES ON ACARI. 245 
featherlike ones. The epimera I are joined to a sternum. 
There are genital suckers in both sexes. The d is deprived 
from anal suckers and from suckers on tarsus IV. The genital 
aperture of the d lies between the epimera IV and the tro- 
chanter IV, that of the © extends from the proximal ends of 
epimera III to the distal ends of trochanteres IV. The legs 
are typical those of Tyroglyphus Latr. 
So we have here a creature which unites characters of 
Tyroglyphus sensu lato and Glycyphagus sensu lato. And what 
is still more remarkable, it shows undeniably characters of 
Pterolichus, and therefore may be adopted as a link between 
Tyroglyphinae and Pterolichinae, notwithstanding Michael sepa- 
rates the Tyroglyphinae as a family apart (7yroglyphidae) 
from the other Acaridae (Pterolicheae, etc., etc.). | 
The type of the genus is Swidasia pontifica, thus called by 
me, because it forms the bridge between the Zyroglyphinae 
and Pterolicheae. 
Remarkable is its being provided with Pterolichian charac- 
ters, as the creature really lives parasitic on a bird. It is 
found by Dr. E. L. Trouesfart in the quills of the remiges 
of Aramus scolopaceus of tropical America. 
4. Suidasia pontifica Oudms. 
(With Plate X, fig. 21—29). 
1905 January 2. Suidasia pontifica nov. sp. Oudemans in 
Entomologische Berichten, n° 21. p. 209. 
Male. The single specimen under my examination was only 
a skin, so entirely empty (except some hyphae and spores) as 
if it were treated with caustic kali; it was as transparent as 
glass. Consequently the specimen must have been dead for 
several months before the bird was shot and prepared for the 
Museum of Angers, where Dr. E. L. Tronessart examined the 
contents of the quills. Moreover this skin was shrump con- 
