274 
a pear- or bottle-shaped sack ending blindly in the abdomen. The 
fore-end is tapering towards the mouth. Off the intervals between 
the third and fourth thoracic segments, and between the fourth 
thoracic segment and the abdomen, the stomach is narrowed by 
the dorso-ventral ligaments. 
The nervous system I have not been able to see. 
Muscles (figs, 16, 18). There is one pair of dorsal lcngitudinal 
muscles (m.d.), lying with an interval about as large as the breadth 
Figs. 16 and 18. The female, ventral and dorsal view. 
Fig. 17. The head. of the female, from below. 
(For explication of the letters see p. 269). 
of the intestine. The fore-end cannot be seen. At the interstice 
between the fourth thoracic segment and the abdomen each muscle 
is cleft into two branches; the inner branch meets with that from 
the other side just at the innerside of the three-angular dorsal pro” 
cess, and goes then along with each other to the hind end of 
the body; the outer branch has a curvature inside the hindmost 
pair of dorsal impressions and goes from there to the hind edge 
of the body where it meets with the medio-dorsal branch(es) and 
the two longitudinal ventral muscles (m.v.). — Also other muscles 
are found, but I cannot render an account of them. 
Dorso-ventral ligaments (figs. 16, 18, lig. 1—3). At the 
same places where the dorsal and ventral muscles are attached off 
the intervals between the following segments: 2.—3. and 3.—4. 
thoracic segments,. and 4. thoracic segment and the abdomen, three 
