2715 
pairs of ligaments are fixed inside the impressions mentioned above. 
Each ligament goes from a dorsal impression with its correspond- 
ing muscular insertion to a similar impression at the ventral side. 
The two hind-most pairs of ligaments narrow the stomach, espec- 
ially the hind-most pair. — 
The systematic position of this interesting species can not be 
ascertained. The male resembles very much that of Chordeumium, 
the position of which is also doubtfull (Jungersen, I. c. 1914, 
p. 18), but the females are quite different. The species does not 
seem to be closely related to any of the existing families. Unfor- 
tunately there are only two specimens (3,2), both full-grown; if 
we had had earlier stages, it might have been possible to find out 
the relation to other families; but this is not the case. 
23—2—18. 
