126 Memotrs of the Indian Museum. [Vo.. IV, 
another spine which is stout and much shorter. The proximal segment of the outer 
uropod bears the usual series of movable spines along its external margin. As in L. 
acanthocarpus there is on the ventral side a small fixed spine and a setose lobe project- 
ing over the articulaton of the ultimate segment (fig. 98). 
The type specimen is pale in colour with scattered dark chromatophores on the 
carapace, which are closely aggregated near the posterior margin (fig. 95). The 
rostrum is sprinkled with similar chromatophores which are thickest proximally. On 
each of the free thoracic and abdominal somites there is a broad transverse dark band 
separating narrow anterior and still narrower posterior borders. On the first five 
abdominal somites the dark band shows a tendency to become divided by a narrow 
and obscure, transverse, pale stripe. ‘The colouring of the sixth somite and of the 
telson is shown in fig. 97. The peduncular segment of the uropods is dark as is also 
the inner ramus. There is a dark spot near the distal end of the proximal segment of 
the exopod and the outer segment is suffused with dark pigment at the base. 
Thanks to the kindness of Mr. J. C. Moulton, I have had an opportunity of ex- 
amining the only known example of this species, and I have been able in consequence 
to supplement Nobili’s account with figures and a few further details. 
The type of Lysiosquilla tigrina is a male, 45 mm. in length. It was found at 
Santubong, Borneo, and is preserved in the Sarawak Museum. 
10. Lysiosquilla vicina, Nobili. 
1904. Lystosquilla vicina, Nobili, Bull. Mus. Hist. Nat., X, p. 229. 
1906. Lysiosquilla vicina, Nobili, Ann. Sci. Nat., Zool. (9), IV, p. 339. 
This species is founded on a single small specimen in which the raptorial claws are 
wanting. It appears to be allied to L. tigrina ; but is distinguished by the following 
characters :-— 
1. The rostrum is trispinous, each antero-lateral angle being acutely produced. 
. The posterior ventral border of the sixth abdominal somite is smooth and with- 
out spines. 
3. As in L. tigrina there are four pairs of large primary teeth on the margin of the 
telson, but the stout additional spine, which occurs in that species below the 
proximal lateral tooth, is missing. . 
L. vicina seems to be easily distinguished from all other known species of Lysio- 
squilla by the trispinous rostrum, and from all except L. tigrina by the four pairs of 
long fixed spines on the margin of the telson. 
The type and only known example, a male only 27 mm. in length, was found at 
Obock in the Red Sea in sand inhabited by Balanoglossus. 
to 
11, Lysiosquilla insignis, Kemp. 
Plate IX, figs. 99-102. 
1911. Lystosquilla insignis, Kemp, Rec. Ind. Mus., VI, p. 94. 
The carapace is smooth, longer than its greatest breadth and is obtusely angled 
