1913. | S. Kemp: Crustacea Stomatopoda of the Indo-Pacific Region. 127 
antero-laterally. There is no cervical groove, but the gastric grooves are distinct 
throughout. ‘The rostrum has the form of a narrow isosceles triangle and is more than 
one and a half times as long as broad. ‘There are no antero-lateral angles and the 
lateral margins, which are feebly sinuous, converge to a very fine spinous apex (fig. 99). 
The eyes are very large. The cornea is oblique and obscurely bilobed ; its greatest 
breadth is one-third the mid-dorsal length of the carapace and is about equal to the 
total length of the whole eye. Seen from above, the anterior margin of the ophthalmic 
somite and its dorsal processes are entirely concealed by the rostrum. ‘The antennular 
peduncle is nearly half the length of the carapace (excluding the rostrum), and its ulti- 
mate segment is only half the length of the penultimate; the dorsal processes of the 
somite consist of a pair of sharp divergent spines. The mandibular palp is composed 
of three segments. : 
The carpus of the raptorial claw (fig. 100) is not carinate, but its dorsal margin ter- 
minates in a sharp spine ; the propodus bears four movable spines at the base of its 
pectinate margin. ‘The dactylus is provided with seven or eight teeth including the 
terminal one, the penultimate being, as in L. acanthocarpus, very noticeably shorter 
than the ante-penultimate. The external margin is concave and at its base bears two 
lobes, the anterior of which is obsolete, while the posterior has the form of a sharply 
acute tooth. 
The posterior portion of the lateral margin of the fifth somite projects outwards 
as a thin vertical blade. The sixth somite has an angular dorsal elevation on either 
side near the anterior edge ; antero-laterally the margin is deeply excavate and behind 
this projects in the form of a truncate lobe with rounded subrectangular anterior and 
posterior angles. The seventh somite is broadest posteriorly ; its lateral margins are 
obliquely truncate in front and rather sharply rounded behind (fig. g9). The basal 
segment of the last three thoracic appendages terminates posteriorly in a sharp spine. 
The shorter ramus of the limb attached to the sixth somite is rather broadly oval, that 
of the eighth much narrower, though it could scarcely be termed linear, while that of 
the seventh is intermediate in form. 
The first four abdominal somites are smooth dorsally. The postero-lateral angles 
of the first three are rounded; those of the last three are sharply spinous. The fifth 
somite bears an obscure longitudinal carina on either side in its posterior half. The 
sixth somite, in addition to the spines at its postero-lateral angles, possesses a dorsal pair 
situated close to the distal margin (fig. tor). Hach of the latter forms the termination 
of an irregular blunt carina, and between this and the outer margin there is also another 
carina which runs obliquely towards the postero-lateral spine. On its ventral surface 
the sixth somite bears a sharp curved spine at its antero-lateral angles situated im- 
mediately in front of a prominent rounded lobe. 
The telson (figs. tor, 102) is rather less than twice as broad as long. It bears on 
its dorsal surface two pairs of tubercles and eight longitudinal carinae, the outermost 
of which is bifurcated proximally. The peculiar arrangement of these carinae, which 
are slightly irregular and not precisely similar on either side, is shown in fig. ror and 
does not call for detailed description. In place of the curved series of dorsal spines 
