558 FKE.SI-IVVATER EhfTOlIOSTRACA OF N.S.Yv'. ii. COPEl'ODA, 



of the first abdominal segment, inner lobe also acute. First segment of the 

 abdomen exceeds the combined length of the two succeeding segments; it is very 

 slightly dilated at the base and quite symmetrical; caudal rami longer than the 

 last abdominal segment; caudal setae strongly developed. Antennules (PI. Iv., 

 fig. 4) extending, when reflexed, to the middle of the caudal rami. Fifth pair of 

 legs of normal structure, the terminal segment of the exopodite (PL Iv., fig. 3) 

 bearing seven comparatively short spines. Length, 1.5 mm. 



Male. Eight antennule (PI. Iv., fig. 7) less swollen than is usual in the 

 genus, distinctly geniculated. Fifth pair of legs most nearly resembles that of 

 B. oblonga; in the left leg (PI. Iv., fig. 6) the second basal segment bears a 

 serrated lamella which is armed with several small denticles and terminates in a 

 claw-like projection which also bears denticles; this projection is distinctly 

 separated from the remainder of the lamella; endopodite of irregular shape, ex- 

 tending more than half the leng-th of the first segment of the exopodite; the right 

 leg (PI. Iv., fig. 5) has an inward projection on the endopodite as in B. oblonga, 

 though it is of different shape and the endopodite itself does not terminate in a 

 fine point as in that species but has an indentation in its otherwise rounded 

 apex; the endopoxlite reaches the end of the second segment of the exopodite; 

 the exopodite bears a terminal curved claw which is longer than the ramus, its 

 other two spines are nearly equal in length. Length, 1.3 mm. 



Note. — This species was reared from a sample of dried mud, and both males 

 and females were plentiful in the aquarium ; they were transparent, but the egg 

 sacs were usually tinged with salmon pink. 



Distribution.— l^.S.W.: Corona (north of Broken Hill). 



BOECKELLA MINUTA SarS. 



Sai-s, Arch. Math, og Naturvid., 18, 1896, Plate 8, figs. 5-7. 



Female. Cephalothorax elongated, slender, narrowing anteriorly; last seg- 

 ment expanded laterally ' into two bilobed lappets, outer lobe narrow and pointed, 

 reaching beyond the middle of the first abdominal segment, inner lobe small and 

 triangular. Abdomen slender, genital segment asymmetrical, longer than the 

 next two segments combined; caudal rami longer than the last segment of the 

 abdomen, but not as long as the last two segments combined. Antennules long, 

 extending, when reflexed, beyond the caudal rami. Fifth pair of leg-s with a 

 poorly developed terminal segment of the exopodite, which bears only two un- 

 equal apical spines. Length, 1.2 mm. 



Male. Smaller than the female. Fifth pair of legs with both endopodites 

 simple, one segmented, that of the right leg being larger than that of the left; 

 the second basal segment of the left leg projects inwardly to a sharp point, both 

 exopodites slender and provided with slender curved spines. 



Distribution. — This small species is the commonest found in the State and is 

 widely distributed. A few specimens were bred in an aquarium prepared with 

 dried mud from Bringagee. N.S.W. : Kendall, Epping, Parramatta, Botany, 

 Waterloo Swamps, University Pond, Lane Cove, Yarrangobilly, Bringagee, 

 Corowa ; Victoria. 



BOECKELLA ROBUSTA SarS. 



Sars, Arch. Math, og Naturvid., 18, 1896, Plate 8, figs. 1-4. 

 Female. Cephalothorax robust, the greatest breadth occurring in front of 

 the middle, slightly tapering posteriorly; lateral expansions of the last segment 



