34 NOTES ON AUSTRALIAN CHAETOGNATHA, 
extending to seminal vesicles when the latter are tumid_ 
being always more than 50% of fin in front of tail septum. 
Australian localities; Great Sandy Island, Queens- 
land (Ritter-Zahony, 1909; Shark Bay, W.A. (Ritter- 
Zahony, 1910). Also recorded from New Guinea ; Altantic 
Ocean ; North Sea; Baltic Sea; English Channel ; Irish 
Sea; Mediterranean Sea ; Carribean Sea: Indo-Pacific ; 
Bay of Bengal; Southern California; 8. of the Cape of 
Good Hope ; Arctic Ocean. 
10 S. tenuis Conant. 
This species is placed by Ritter-Zahony in the synonymy 
of S. bipunctata, but Michael (1911, p. 72) declares it dis- 
tinct. We vefer to this species a solitary specimen which 
is opaque and firm, and more or less of even width. It 
is impossible to make out the limits of the fins, but all other 
measurements coincide with those of S. tenuis, though 
our specimen is 0.5mm. longer than any other recorded. 
There is a small collarette, a few papillae, and no neck ; 
the tail is full of sperm morulae. It should be borne in 
mind that Ritter-Zahony has already recorded S. bipunctata 
from Great Sandy Island, on the Queensland coast. 
Australian locality: Port Jackson (June, 1907). 
Previously recorded from Jamaica by Conant. 
11. S. neglecta Aida. 
Syn: S. septata Doncaster, 1902. 
Our specimens ranged from 3.6 to 5.2mm. in length, 
none of which were fully mature. They were slender, firm 
and opaque. A collarette was visible on several. The 
anterior fin reached the seminal vesicles. There was less 
than 50° of the posterior fin in front of the tail septum. 
The fins were imperfect in all our material, which will 
account for the great variation in the interval between 
the fins as recorded in our table. 
Australian localities ; Caloundra and Southport, More- 
ton Bay, Queensland, May, 1918, Feb., 1919. Also recorded 
from the Indo-Pacific: Maldives ; Japan; East Indies ; 
Southern California. 
