1!Y MARGUERITE HENRY. 35 



Distrihutiun.— hi N.S.AV., this species has only been found in the neighbour- 

 hood of Sydney, Kensington, the Waterloo swamps and ponds neai- Bourke St. 

 and Botany Ed. It also occurs in Victoria. 



MoiNA TENUioOBNis Sars. 



Described by Sars in the same paper as the preceding species (1896, Plate 

 4, fig-s. 1-8). 



Female. The general shape of tlie carapace is very like that of 31. austra- 

 llensis. The head differs in that it lacks the sinus above the eye and has a 

 rounded prominence at the insertion of the antennules. Bye larger than in M. 

 attstraliensis, antennules longer and narrower. Post-abdomen as iu M. austra- 

 liensis except that the lend-claws are armed with a series of secondary teeth. Two 

 eggs are found in the ephippium. Length 1.2 mm. 



Male. Very like M. austraUensis, the antennules much longer, exceed- 

 ing half the length of the body. Length .7 mm. 



Distribution. — N.S.W. : Bourke St., Botany, University Pond, Corowa. It 

 has also been recorded from Victoria and South Africa. 



Moi>fA PROPINQUA Sars. 



Described by Sars (1885) from specimens raised from dried mud from the 

 Gracemere Lagoon, near Rockhampton. 



Female. Carapace rounded, sometimes very gi-eatly expanded dorsally. Head 

 with the doi-sal margin slightly concave above the eye, front rounded, ventral 

 margin straight. Eye of moderate size. Antennules shoi-t, fusiform, with a 

 long tentacular seta situated above the middle. Post-abdomen with nine lateral 

 denticles, the last as usual bidentate; end-cla.ws smooth. Ephippium with a 

 single egg. Lengih about 1 mm. 



Male. Antennules very long, about the length of the head, each bearing 3 

 incurved hooks. Length .6 mm. 



Distrihution. — N.S.W. : Bourke St., Botany; Queensland: Rockhampton^ 

 Java, Algeria. 



Family MACROTHRICIDAE (Lyncodaphniidae). 



Antennules in the female long and freely movable. Ocellus present. Four 

 to six pairs of feet. Intestine simple or convoluted. 



Key to genera of Macrothricidae. 



A. Six pairs of feet IlyoerypTus. 



AA. Five pairs of feet. 



B. Anal denticles present Macroihrix. 



BB. Anal denticles absent Pseudomoina^ 



Genus Maceothrix Baird, 1843. 



Female. Shape oval, compressed, with a dorsal crest. Head large, rostrum 

 short. Eye large, ocellus present. Antennules flattened and curved, antennae 

 with four setae on the dorsal ramus, five on the ventral. Post-abdomen large, 

 no abdominal process. Five pairs of feet. Intestine simple, no caeca. 



Male. Antennules large, first foot bearing a hook. About thirty species 

 of this genus have been described; two occur in New South Wales. 



