1913. | S. Kemp: Crustacea Stomatopoda of the Indo-Pacific Region. I21 
The outer inferior margin of the raptorial claw is rounded distally. The carpus is 
not carinate above, but its dorsal margin is provided with a sharp distal spine. Along 
its inner edge the propodus is finely serrate and bears four large movable spines near 
the base. Externally the dactylus is convex and at its proximal end is cut into two 
small subequal lobes, the distal of which is the more obtuse. Internally it is provided 
with five, more commonly with six spines, including the large terminal one. The teeth 
are as a rule microscopically serrate and the penultimate is much shorter and more 
slender than the ante-penultimate. 
The lateral margins of the fifth thoracic somite are vertically grooved ; those of 
the two succeeding somites are truncate with rounded anterior and posterior angles. 
The shorter ramus of the limbs of the last thoracic somite is linear, those of the two 
preceding somites broadly ovate. 
The first five abdominal somites do not possess spines at the postero-lateral angles. 
The sixth bears a stout spine at each of these angles and its dorsal surface is very ob- 
securely furrowed longitudinally on either side. On its ventral surface this somite pos- 
sesses a slender curved spine at its outer anterior angles, projecting backwards over 
the base of the peduncle of the uropods. 
The telson is more than twice as broad as long. Near its base it bears dorsally a 
pair of shallow oblique grooves which run towards the antero-lateral angles, but disappear 
close to a small and obscure tubercle before reaching it. Distally there is a dorsal series 
of five sharp spines arranged in a semicircle. These spines do not form the termina- 
tions of longitudinal carinae as they do in certain other species of Lysiosquilla. On the 
margin three pairs of fixed primary spines may be distinguished ; the submedians are 
the smallest and the laterals much the largest. Close beneath each submedian there is a 
conspicuous movable spine and the margin between the two is occupied by a series of 
five or six (rarely four) pairs of small, sharp, fixed denticles. There are three stout 
denticles, two of which are usually placed close together, between the submedians and 
intermediates and one between the intermediates and laterals. Beneath the base of 
each lateral spine there is a small, acute, outwardly-directed lobe. The inferior surface 
of the telson is swollen with a large depression behind the anus. 
The peduncular segment of the uropods bears a longitudinal carina along its 
antero-lateral margin, and a small dorsal spine posteriorly near its articulation with 
the exopod. ‘The ventral bifurcate process consists of two long tricarinate spines, the 
outer of which is less than two-thirds the length of the inner. Behind these spines the 
lower surface bears a median carina which runs backwards and terminates abruptly in 
a blunt tooth close to the proximal margin. 
The outer margin of the basal segment of the exopod bears a series of six or seven 
movable spines of which the two last are much longer than the rest. There is also a 
short fixed ventral spine projecting over the articulation of the ultimate segment, and 
inwards of this a small rounded plate bearing a series of long setae. The antero-lateral 
angle of the inner uropod is always permanently bent over and rests against the dorsal 
surface. 
