EEPOET OIST THE STOMATOPODA. 
59 
Eostrum consisting of a transverse proximal portion more than twice as wide as long, 
with subaente antero-lateral angles, and a long slender median acute spine which reaches 
beyond the bases of the eyes (see fig. 6). Carapace nearly rectangular, three-fifths 
as long as wide, leaving the dorsal surface of the second thoracic appendage almost 
completely exposed, with broadly rounded antero-lateral and more acutely rounded 
postero-lateral angles. The antero-lateral angles project forwards beyond the median 
gastric area, which is very slightly convex and a little wider posteriorly than anteriorly, 
and bounded by two nearly straight gastric sutures which run from anterior to posterior 
edge. Transverse cervical suture almost invisible. Posterior edge of carapace 
transverse. Second thoracic somite as wide as carapace. The eight following somites 
equal in width, and wider (xxf) than the carapace. The lateral margins of the third 
thoracic somite are straight, with rounded angles, and as wide as the dorsal portion ; the 
fourth is narrowed a little towards the lateral edge, and the fifth still more. There is a 
median impressed line on the dorsal surface of the third and one on the fourth thoracic 
somite. All the abdominal somites have marginal carinae which are wide in front and 
gradually become narrow towards the postero-lateral angle, which is rounded in the first 
four segments, rectangular in the fifth, and ending in an acute spine in the sixth (see 
fig. 1). There are no dorsal carinae on the first five abdominal segments. The sixth 
(see PL XIV. fig. 4) has a short unarmed median carina and three pairs of lateral carinae, 
which terminate posteriorly in acute spines and are greatly swollen, so that they together 
occupy more than half the dorsal surface of the somite, convexly rounded, and widening 
anteriorly. The spines of the submedian and marginal carinae project beyond the 
posterior edge of the somite, while those of the intermediate carinae barely reach it. 
The second, third, fourth, and sixth abdominal somites are equal in length, and longer 
than the first and shorter than the fifth. A strongly impressed suture (see PI. XIV. 
fig. 1) crosses the middle line of each of the first five abdominal somites near the 
posterior border, and bends forwards on the side of the somite, and each of these somites 
has also a lateral longitudinal suture on each side, branching upwards at its posterior edge. 
The telson is considerably wider than long (xff) and its dorsal surface is folded into 
a very graceful pattern which can hardly be satisfactorily described, although it can be 
understood by comparing the profile view, fig. 1, with the surface view shown in 
fig. 4. The median portion is occupied by' a hemispherical prominence, upon which 
are five meridional carinae, which are convexly rounded and so greatly swollen that they 
almost completely cover it. Three of these, the median and submedians, are abruptly 
rounded and emarginated at their posterior ends, where they end in acute spines, while 
the third or marginal pair do not end in spines and are much shorter. 
On each side of the median prominence there is on the anterior edge of the telson a 
triangular prominence with a broad rounded subacute carina, and outside this, and near 
the antero-lateral angle, there is a transverse rounded promiuence without a keel, and a 
