418 
PACIFIC SCIENCE, VoL VII, October, 1953 
grooves; sometimes marked by patches of 
pits rather regularly disposed near lateral mar- 
gins; posterior margin indistinctly notched 
in mid-line with three pairs of blunt lobes, 
the two outermost generally sharper and more 
conspicuous than the inner. Inner dorsal edge 
of peduncular segment of uropods ending in 
short spine; exopod of uropods with eight 
or nine movable spines; basal portion of uro- 
pod elongated into two long spines, inner 
nearly twice length of outer, but obscured 
dorsally. Modified first abdominal appendage 
of male shown in Figure 15g. Animals are 
marked by alternating series of light and dark 
bands throughout the length of the body. 
Specimens vary in length from 69 to 283 mm. 
DISCUSSION: This species is very readily 
identified. All specimens which have been 
hitherto reported, as well as those which I 
have examined, have possessed the character- 
istic dark transverse bands shown in Figure 
14. In large female specimens this appears to 
be a secondary sexual characteristic, inasmuch 
as the carapace, free thoracic somites, and 
sixth abdominal somite are almost entirely 
blue-black. Nearly always in males there are 
alternating dark and light bands with the tel- 
son having a pattern which may vary from 
that shown in the figure but which usually 
has dark central and lateral areas. Preserved 
specimens retain the coloration, but the dark 
pigment becomes a brownish black. 
There appear to be other characteristics 
showing a sexual dimorphism in this species. 
Miers (1880) and Kemp (1913) record several 
large females in which the carpus and the 
basal part of the raptorial propodus bear tufts 
of long hairs, and the latter with only two 
movable spines at its proximal end instead of 
four. The raptorial dactylus in these cases is 
also reported by them to have only a series 
of eight or nine denticles rather than the long 
teeth usually found there; however, none of 
the specimens which I have examined has 
shown these modifications. Evidently this is 
due to the relatively small size of the female 
specimens which I have examined compared 
with those which they report as having these 
modifications. 
This species and Squilla oratoria are the two 
largest stomatopods found in the Hawaiian 
Islands. I have examined six males and three 
females ranging from 70 to 185 mm. from 
the tip of the rostral spine to the posterior 
border of the telson. Other authors have re- 
ported specimens ranging from 69 to 283 mm. 
Lysiosquilla maculata seems to occur in shal- 
low water with a sandy or muddy substrate | 
where it may burrow easily. All those spec- | 
imens which I have examined had been col- ' 
lected in the fine silt on the reefs at Oahu and | 
Hawaii. Mr. Kenji Ego (personal communi- ] 
cation) reports that they occur in abundance ' 
in the mud flats at Kawaihae, Hawaii. I 
DISTRIBUTION: This species is widely dis- ' 
tributed throughout the Indo-Pacific. In the 
Pacific it has been reported from the Hawaiian | 
Islands, Marquesas Islands, Samoa, Fiji, Phil- | 
ippine Islands, and the Dutch East Indies, j 
Fig. 16 Coronida sinuosa Edmondson (female). 
