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Records of the Australian Museum (2014) Vol. 66 
6 a and |3 setae on female caudal ramus not close (equal to or 
greater than l A length of ramus apart). Male P5 trapezoid (sides 
not parallel) . 7 
- a and (3 setae on female caudal ramus not close (equal 
to or greater than l A length of ramus apart). Male P5 
rhomboid (sides parallel). Male P2 endopod with two terminal 
setae. Acutiramus geddesi (Geddes, 1968) comb. nov. 
- a and |3 setae on female caudal ramus close together (% 
length of ramus apart). Male P5 trapezoid. Male P2 endopod 
with three terminal setae. (Plate 2A) ... Acutiramus sesquimaculatus (Harris, 1994) comb. nov. 
7 Anterior bulge on female cephalosome partly obscures rostrum. 
Male antennule with ventral blade . 8 
- No anterior bulge on cephalosome, rostrum prominent. No 
ventral blade on male antennule. 9 
8 Female P5 truncated posteriorly. Female genital double¬ 
somite without lateral notch. Ventral blade on male antennule 
about 1/2 length of compound segment 3 + 4. (Plate 2B, p. 165) 
. Acutiramus rufolineatus Harris & Robertson, 1994 
- Female P5 not truncated (P5 laid flat), apex with small notch. 
Female genital double-somite with distinct lateral notch. Ventral 
blade on male antennule small (less than % length of segment 
3 + 4. (Plate 2E, p. 165). Acutiramus quinquelineatus Harris & Robertson, 1994 
9 Rostrum with clear spherical “lens”. Seta T1 on female caudal 
ramus very small, T3 very slender, space between T3 and T4 
setae 2 A length of oblique posterior edge of ramus. Coupling 
denticle on male antennule C-shaped, anterior lobe carrying 
8 seta short. Acutiramus bipunctatus sp. nov. 
- No spherical “lens” in rostrum. Seta T1 on female caudal ramus 
as large as T4, T3 same as T2, space between T3 and T4 setae 
Vz length of oblique posterior edge of ramus. Coupling denticle 
on male antennule not C-shaped, anterior lobe carrying 8 
seta long, finger-like. Acutiramus edenensis sp. nov. 
Acutiramus bipunctatus sp. nov. 
Figs 19-22, Plate 1C 
Type material. Holotype adult male, length 0.56 mm, 
P81192; allotype adult female length 0.64 mm, P81193; 
paratype specimens 15 ijFll* 10 SS, P81194, deposited 
at AM, Sydney. Additional paratypes deposited at NHM, 
London. All collected from Zonaria sp., sublittoral, Point 
Vernon, Hervey Bay, Queensland (25°15'S 152°47'E), V. 
A. Harris, 1997. 
Diagnosis. Conspicuous transparent oval lens-like body in 
rostrum of male and female; P3 endopod with internal seta on 
segment 1; space between T3 and T4 setae on female caudal 
ramus wide (% length of bevelled edge); no plumose setae on 
segment 2 of male antennule, no ventral blade on segment 
3, segment 4 with characteristic C-shaped coupling denticle, 
dactylus cylindrical (almost as long as segment 3+4); female 
rostrum prominent, not obscured by median anterior bulge 
of cephalosome; “shoulders” of male cephalosome rounded, 
no epaulet present; female caudal ramus long (18% body 
length), narrow (1/w 3.7), sides straight without setules 
along medial edge, a and (3 setae not close, terminal seta T1 
to T4 plain, T1 very small, recessed; internal seta present 
on segment 1 of P4 endopod; female P5 exopod truncated, 
almost rectangular. 
Biometric data. Females (N =12): maximum length (L m ax) 
mean 0.62 mm, range 0.57-0.68 mm, body length (L U rs) 
mean 0.59 mm, range 0.55-0.63 mm; cephalosome width 
(W) mean 0.43 mm, range 0.41-0.44 mm; rostrum width 
(R) 0.10 mm; genital double somite width 0.21 mm, length 
0.16 mm; caudal ramus width 0.03 mm, length 0.11 mm. 
Ratios: L U r S AV 1.39; W/R4.43; genital double-somite w/1 
1.3, arch 50% of somite length; caudal ramus 18% of L U rs, 
ramus 1/w 3.7, Hicks’ index for |3 51%. 
Males (N = 11): maximum length (Lmax)mean 0.56 mm, 
range 0.52-0.58 mm, body length (L U rs) mean 0.53 mm, 
range 0.49-0.55 mm; cephalosome width (W) mean 0.44 
mm; caudal ramus width 0.035 mm, length 0.045 mm; 
antennule fully extended (N = 7) 0.13 mm; spermatophore 
0.18 x 0.07 mm. 
Ratios: L ur s/W 1.2; caudal ramus 1/w 1.2; antennule 23% 
of body length L U rs, antennule segment 2 34%, segments 3+4 
35% and dactylus 24% of antennule length; spermatophore 
30% of body length Lurs- 
Description. Adult females (Fig. 19A; Plate 1C, p. 163): 
pale yellow or colourless with small pale red dorsal patch 
immediately behind dark red eyespot, dorsal region of 
metasome segments pale red. Outline of cephalosome a 
truncated semi-ellipse with slight dorsal bulge above rostrum, 
rostrum not obscured. Conspicuous clear oval lens-like body 
