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Table 6 Sepia senta sp. nov.; ranges of arm length indices (ALI), arm sucker diameter indices (ASIn) and arm sucker 
counts (ASC) of 10 mature males and 10 mature females, min. = minimum, max. = maximum, SD = 
standard deviation. 
Males 
min. 
mean 
max. 
SD 
Females 
min. 
mean 
max. 
SD 
ALII 
39.2 
46.0 
50.9 
4.7 
34.3 
40.6 
45.2 
3.9 
ALI2 
39.0 
45.1 
54.2 
5.6 
38.0 
44.5 
51.1 
4.7 
ALI3 
39.8 
47.8 
61.4 
5.9 
36.9 
45.3 
54.9 
5.0 
AL14 
39.8 
46.7 
55.2 
5.4 
39.2 
45.3 
48.8 
3.4 
ASInl 
2.31 
2.54 
2.76 
0.16 
1.55 
1.80 
2.06 
0.14 
ASIn2 
2.18 
2.48 
2.87 
0.19 
1.56 
1.84 
2.15 
0.19 
ASIn3 
2.04 
2.46 
2.89 
0.22 
1.42 
1.73 
2.13 
0.22 
ASIn4 
1.82 
2.15 
2.45 
0.20 
1.33 
1.70 
1.91 
0.19 
ASCI 
62 
73 
84 
7 
80 
94 
107 
8 
ASC2 
64 
79 
96 
9 
90 
109 
116 
9 
ASC3 
70 
91 
109 
12 
114 
124 
132 
6.6 
ASC4 
116 
134 
164 
15 
122 
141 
156 
11 
0.49 -0.62- 0.82 (SD, 0.10). Sucker dentition: half 
inner ring circumference with 6-7 blunt 
projections, half circumference with 6-7 pointed 
teeth (Figure 12B); infundibulum with 8-9 rings of 
round-ovate processes without pegs; at periphery 
processes smaller, flattened, hexagonal, or 
quadrilateral (Figure 10D). Swimming keel of club 
extends slightly beyond carpus (Figure 12A). 
Dorsal and ventral protective membranes not 
fused at base of club; joined to stalk; differ in 
length, ventral protective membrane terminates at 
posterior end of carpus, dorsal membrane shorter 
than carpus (Figure 12A); approximately equal 
width; dorsal protective membrane forms shallow 
cleft at junction with stalk. 
Gills with 20-25 lamellae per demibranch; 
females with greater number than males; GiLC 
males 20-21-22 (SD, 1), females 23-24-25 (SD, 1). 
Figure 11 Sepia senta sp. nov.; A, funnel organ, male holotype MV F77200, 41.5 mm ML; B, funnel-locking cartilage 
(left), and mantle-locking cartilage (right), male holotype MV F77200, 41.5 mm ML; C, hectocotylised left 
ventral arm, male paratype WAM 332-86, 57.3 mm ML; D, right ventral arm, male paratype WAM 332-86, 
57.3 mm ML. Scale bars 2 mm. 
