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36 NOTES ON AUSTRALIAN CHAETOGNATHA 
TABLE OF CHARACTERS OF SPECIES OF SacittTa (recorded 
from Australian waters). 
() denotes information obtained from the following 
sources: Fowler (1906); Michael (1908); and _ Ritter- 
Zahony (1911). 
14. Spadella moretonensis a. sp. (Text-figures 1-4). 
A small robust species, 3.68mm. in length, with a 
pronounced neck region, which is masked by an extensive 
°% of total length. 
Bonothy even eames | Post. | Dist. |Anter.|Poster. 
inmm. | Tail fin. fin. bet. fins teeth | teeth 
. serratodentata | 3.4-16 | 20-30 | (20-24) | 14287 (7.5) 2-3 4-12 
(17) | (36) (25) (11) | (20) 
qustralis.4.)0|, 12224016197 4) 20-98. "ages 8. "eae yaad 
a 
~ ollnmye G6 call lrg 13-20 | 11-17 17 6.8 10 15 
(20) | (25) (17) 
Ypulchrs, | 628. | BTIB~ |)(34%6) (24) | (5.7) |(5-10)] (9-19) 
(22) | | | 
. minima S14. 8-6 | -19=28%! | (3-5) | (7-14) 
(10) | | | 
_bedoti .. ..| (5-18) |(21-35) | (20) | (24) |(5.4) | (@-13)] (20-23) 
. regularis soll ake 29) (13) (23) 6.8 | (2-4)] (2-6) 
(27) (40) | 
pees | err (er: | 
robusta ..| 14416 | 20-29 | 14-17 | 18-24 W0ST2ey omens 
(20) | (36) (20) (6.8) | (10) | (16) 
. bipunctata ..| (9-20) | (21.27) | (15-9) (7.9): | (TASB eT) 
. tenuis .. .:| 6 28.3 | (12-13) | (25.6) |(16-17)) (5) | (9) | 
(29) | ' 
neglecta ..| 3.6-5°| 24-32.8] 11-18.4 | 17.6-23 | 6.4-11] 24 | 610 | 6-7 
(10) (40) (2a (This). | 
collarette, reaching the lateral fins and having a swelling | 
on either side of the position of the corona, so that the neck 
region here appears almost as wide as the head, There 
are transverse muscles present throughout both body and 
tail, and the whole animal is covered with sensory papillae, 
each bearing several short tactile setae. The head is 
slightly broader than it is long, and has two prominences 
in front, each bearing 3 or 4 very stout curved teeth 
