39 
On both sides of the dorsal membrane is a broad Space with- 
out longitudinal vessels. The meshes here have a large number 
of stigmata. Transversal vessels of lst—4th order may be disting- 
uished. The vessels of lst order are rather strong, while the fol- 
lowing are much like each other. The arrangement is 1, 4, 3, 2, 
4, 3, 4, 1, — so that seven vessels are found between two ves¬ 
sels of lst order. A very few parastigmatic vessels may be detected. 
Figs. 3—4. Cnemidocarpa aucklandica n. sp. — 3. Body wall seen from the internal 
side. Intestine, endocarp and left gonad in situ. 4. Right gonad in situ. 
The most peculiar feature in this species is the development of 
the genital organs, which are much more strongly developed 
on the right side than on the left side of the body. They consist 
of elongate, somewhat branched masses with ovaria and testes 
united. Several apertures leading into the atrial cavity are present, 
especially on the short branches. The gonads are not equally 
formed in my two specimens. In the large specimen the 
gonad of thp right side is, strange enough, in connection with that 
of the left side, so as to form an elongate mass with some short 
branches. Besides the large mass a little isolated mass is present. 
In this specimen a few testis-follicules are present in the body- 
wall around the combined genital giands. The smaller specimen 
has a large sausage-shaped gonad on the right side and a little 
one on the left; between them, apparently belonging to the right 
side, is another little mass with apertures of its own. It is sur- 
prising to find the gonad of the right side in connection with that 
of the left side, as is the case in the larger specimen. I do, how- 
ever, think that it is to be considered only as an individual pecu- 
