Phyllopoda of Australia. 233 



little curved, and bearing longer and finer bristles. The tJrsfc 

 endite is of usual shape, that of the first pair bearing at about 

 the middle of the length a particularly stout, long, and acutely 

 pointed spine directed upwards and slightly curved, and bearing 

 on the distal half many minute barbs. The second endite is 

 about one-third of the length of the first. The third, fourth and, 

 fifth small and subconical, each gradually becoming smaller and 

 bearing several of the usual long feathered setae, also one long 

 finely feathered spine and one very short one, that of the third 

 being very long. The exopodite is long, rather narrow, and 

 apically bluntly pointed. The last pair of feet have no basal 

 plate, nor gill, and is smaller in size than the first pair. 



Penes double, wide at the base, hind margin straight, front, in the 

 middle, having a wide and deep sinus, defined above by a right, 

 angle, and below by a conical pointed projection. Ovisac scarcely 

 extending beyond the second tail segment, lateral lobes very large, 

 widely divergent, and extending dorsally far beyond the level of 

 the back, ventrally narrowly united, not bulging at all outwards, 

 neck very short and thick, and pointing directly outwards. 



Caudal rami less than one-third the length of the ultimate 

 segment, of flattened form, with the extremity broadly rounded, 

 and the edges thickly fringed with feathered setae. 



Length. — $ 23 mm. $ 18 mm. 



Locality. — Brackish-water swamp near Lake Alexandrina, 

 South Australia. (S.A. Museum, collected November, 1890). 



Remarks. — Of the specimens received about 20 are males of 

 pretty uniform size, and only one female of rather smaller size. 

 It is named in compliment to Mr. A. Zietz, F.L.S., Assistant 

 Director of the South Australian Museum. 



Genus 3 — Branchinella, nov. 



Characters. — In general appearance like Branchipus ; body 

 stout, tail of nine segments besides the caudal rami, the latter 

 well developed and articulated to the terminal segment. Cepha- 

 lon large. Eyes large and prominent. Prehensile antennae of 

 male without any spur or accessory branch other than the frontal 

 appendages, basal joint stout and fleshy and of cylindric form, 

 second joint very much narrower, quite simple, firm and chiti- 



10a 



