
WoOMERSLEY—AUSTRALIAN ACARINA 221 

Fig. 1. A-O, Brachychthonius ef. perpusillus Berl. A. dorsum, B. sensillary organ and seta, 
C. dorsal seta; D-G. B. ef. horridus Sellnick. D. dorsum, E. ventral, F, sensillary organ and 
seta, G. dorsal seta; H—-J. B, longipilus spn. H. dorsum, I. sensillary organ and seta, J. dorsal 
seta; K-M. B. parallelus sp.n. K. dorsum, L, sensillary organ and seta, M. dorsal seta. 
Loc. A single specimen from the above habitat and locality, The species also 
occurs in similar habitat in the New Hebrides. 
Remarks, This species might be ineluded in the group of sculptured forms 
which includes the European brevis (Michael) but is abundantly distinet in the 
form of seulpturing. 
Genus Cosmocuruontus Berl., 1910, 
Acari Nuovi. Manip. VI. Redia V[ 221. 1910, Genotype Hypochthonius lanatus 
Mich. 1888. 
Hypochthonidae with the hysterosoma divided by 3 sutures into 4 divisions. 
Dorsal setae of the two median divisions long and long ciliated. Sensillary setae 
appearing spindle-like, long. 
