160 
connected with bands (c?—c") directed upwards and backwards; the 
ends of these bands are united with each other by the lateral 
longitudinal band (12). This bånd terminates in a muscular spot 
behind the sixth transverse band and is conneeted with the upper 
ends of the two short bands (t?) in front of the first transverse 
band by a broad band (c!) directed upwards and somewhat back- 
wards. Where this band is united with the upper part of the first 
transverse band, ånd where its two muscles are united, a thin muscle 
(F) is directed forwards and downwards. In front of and along 
with the genital opening there is a transverse band fastened to the 
sternum (mg): To the copulative sucker is fastened a muscle (mc) 
the origin of which I have not seen. 
The anal hill, consisting of a right and a left pårt, is provided 
with a broad muscle fastened to its base and corresponding with 
the dorsal constrictor. At thé sides there arise two smaller muscles 
fastened to the base laterally and opening the vent. From the 
base to the outer margin of each valve muscles are extended that 
no doubt have the funetion to invaginate the outer part. 
Æmdosternite. Another interesting part of the muscular system 
is ån organ which seems to correspond with the endosternite of most 
of the Arachnids; it is only found in a few Acari. Between the part 
of the oesophagus which lies behind the brain and the hindmost 
part of the suboésophageal ganglion there is a narrow transverse 
tendon. This tendon grows thicker towards the sides and is enlarged 
to a rather flat funnel on each side, the upper part being separated 
from the lower and directed obliquely upwards or downwards. This 
funnel is much more developed than. the median tendon, being 
extended both backwards and especially forwards, as a muscular 
plate on each side of the brain. The maårgins of, this lateral funnel 
or plate are continued into tendons which probably are connected 
with muscles. The plate is only provided with few nuclei. Where 
the funnel is: separated from the median tendon there is a lumen 
provided with distinet nuclei (pl. VI fig. 7 & 8 en). The lumen of 
this elongated funnel is filled with a twisted gland (coxal gland)- 
