38 
Fam. Styelidae. 
Cnemidocarpa Huntsman. 
Textfigures 3 and 4. 
Cnemidocarpa aucklandica n. sp. 
Locality: Carnley Harbour, at low tide. 
Two specimens were collected. The larger, which has a rounded 
shape, measures 40 mm, while the smaller one is 26 mm in length 
and 18 mm in breadth. The colour is light yellowish. The surface 
is rather even, but some processes or warts are present round 
the siphons, which are very little prominent externally. In the 
larger specimen they are placed at a distance of 15 mm from each 
other. Some Hydroids etc. are found on the surface of the test. 
The test is rather thin, but tough and only with difficulty loosened 
from the body-wall. On the internal side it is whitish. The muscu- 
lature is feeble, the strongest muscle-bands are longitudinal. In- 
testine and gonads are distinctly seen through the body-wall. The 
inner siphons are rather low (6 mm in the larger specimen). Si- 
phonal spinules are present; they are pointed, but short and 
with a broad base. The cells, from which they have evidently 
been derived, are large and easily seen. 
The tentacles are, in the large specimen, present in a number 
of about 50, 23 of which are longer, the shorter ones being placed 
between them. Some are quite rudimentary. The smaller specimen 
has only 30, 15 of which are large. Three sizes can be traced 
out, and the order is approximately 1, 3, 2, 3, 1. 
Cloacal tentacles are present. The dorsal tubercle is 
in both specimens horseshoe-shaped with the aperture directed for¬ 
wards. In the large specimen both horns are turned in, in the other 
one horn is turned in and the other out. 
The dorsal lamina is a plain membrane. 
The branchial sac has on each side 4 moderately strong 
folds, each with 7—13 internal longitudinal vessels. 3—4 inter- 
mediate longitudinal vessels are present. The large specimen has 
the following formula: 
E. 4(11)3(13)3(13)3(10) — D. — (10)3(14)3(13)4(11)5 E. 
The smaller specimen has on the right side the following numbers: 
E. 4 (8) 2 (11) 4 (8) 3 (7) — D. = 47. 
