1928] 
New Oribatoid Mites 
213 
NEW ORIBATOID MITES 
By Arthur Paul Jacot. 
Shantung Christian University. 
In working over various collections and a revision of the 
Phthiracarid* of the northeastern states, the following forms 
were found to be undescribed: 
I. From the Territory of Hawaii: 
Indotritia subgen. nov. (Euphthiracarus) 
Related to genera Tritia, Euphthiracarus, Acrotritia, Ori- 
botritia, but with bristles of aspis very short, the posterior ones 
closer to each other than to pseudostigmata and between them, 
median bristles near edge of aspis and close to pseudostigmata, 
lateral carina usualty well developed; abdomen usually rounded 
(barely pointed) behind; anal plates with long median blades, 
usually with bristle at their base; lateral plates with at least two 
pairs of anterior bristles and three pairs of posterior bristles. 
Type: — Tritia krakatauensis Sellnick (Treubia, vol. 5 (1924), 
pp. 372-373, figs. 1-3). 
E. (Indotritia) bryani sp. n. 
Aspis from side with postero-median depression, lateral 
carina not strongly developed; pseudostigmatic organ rather 
short, blade-like; abdomen similar to that of type, bristles 
short; venter rather broad, lateral plates with two pairs of an- 
terior bristles and three pairs of posterior bristles, anal plates 
with basal bristles only. 
Type locality : — “Wilkes Id.,” Wake Island, under stones; 
Aug. 2, 1923; coll, by E. H. Bryan, (Tanager Expedition), 
about 24 adults, no. BBM07T1 and BBM07T2. Cotypes in 
Bernice Bishop Museum, Honolulu and Museum of Comparative 
Zoology respectively. 
