1913. | S. Kemp: Crustacea Stomatopoda of the Indo-Pacific Region. 87 
The details of the carination (figs. 73—76) are as follows :— 
On the carapace the median carina is distinct throughout its course and is bifurcated 
in front for half its length anterior to the cervical groove. Behind this groove there 
are 26 to 30 longitudinal carinae, of which 18 are sharper and rather more conspicuous 
than the rest. ‘The carinae are least numerous in the extreme anterior part of the 
carapace, where there are only 16 in a transverse series. The rostrum bears 5 carinae ; 
two of these are quite close to, but distinct from, the lateral margin, and two, which 
only extend for less than half the entire length, occur at the base on either side 
of the well-developed median keel. There are two dorsal carinae on the basal 
segment of the antenna and one on the succeeding segment. On the outer surface of 
the merus of the raptorial claw there is a single long carina running forwards and 
upwards. 
The fifth thoracic somite bears four tvansverse carinae and is the only part of the 
animal in which the carination is not longitudinal. Only the anterior carina extends 
across the middie line. Prior to reaching the latter point the posterior one turns 
obliquely forwards and, before arriving at the anterior margin, turns abruptly back to 
the hinder edge. The posterior half of this somite therefore bears, near the centre, 
four short carinae which are almost longitudinal. 
The last two thoracic and all the abdominal somites are covered with close-set 
longitudinal carinae, most of which terminate in spines on the posterior margin. In 
well-grown examples there are 28 on the sixth thoracic, 25 on the last thoracic and 41 
to 45 on the somites of the abdomen. The median, submedian, intermediate, lateral 
and marginal carinae are prominent and can easily be distinguished from the others. 
Of these the following end in spines :— 
Carinae. Abdominal somites. 
Median ie ue xe 165A Byte 5, 
Submedian = is se 3s Or S54 Gin, OE 
Intermediate .. ae Ax 1 By Bp Glo Gin O- 
Lateral te ni 34 SiiZ iy G35 LO 
Marginal ae 3c Ou 2,3, 4,5; 6. 
There are ten or eleven carinae on either side of the median crest of the telson, a 
few of which are not continuous. With the exception of the two innermost pairs they 
run to the marginal teeth and to alternate denticles of the submedian and intermediate 
series ; their exact arrangement is, however, subject to much irregularity. On the 
underside of the telson there is a sharp post-anal crest and eight or nine other carinae on 
either side. There are also several sharp carinae on both upper and lower surfaces 
of the uropod and on the basal and proximal segments of the exopod. 
Apart from the disposition of the carinae, Sguwilla multicarinata differs from S. 
costata in the following features :— 
The carapace is broader than in S. costata and its anterior breadth is a little less 
than half its median length including the rostrum. ‘The antero-lateral spines are 
considerably shorter. The eyes are more expanded and the cornea is set trans- 
versely on the stalk. The mandibular palp is present and composed of three 
