REPOET ON THE STOMATOPODA. 
41 
dactylus of raptorial claw. All the exposed somites of the hind body with lateral dorsal 
carinae, but no submedian dorsal caringe on any of the exposed somites, except the 
sixth abdominal. Pectinations on inner edge of second joint of raptorial limb undulating. 
Width of fifth abdominal somite equal to one-fourth of the total length. Inner spine of 
basal joint of uropod longer than the outer, with a rounded tooth on its outer edge, and on 
its inner edge four or five acute teeth gradually increasing in size distally. Rostrum 
wider than long. Dorsal surface of telson with numerous rounded tubercles on each side 
of median ridge ; ventral surface smooth. 
Special Description . — Rostrum without a median ridge, a little longer than wide, 
subtriangular and nearly semicircular. Antero-lateral angles of carapace acute ; postero- 
lateral angles broadly rounded, and prominent ; anterior and posterior borders nearly 
transverse. Carapace without a median carina, and with very faint lines indicating the 
lateral carinse ; gastric area convex and prominent, with a strongly marked cervical 
suture. Length of rostrum T £-£ a , and of the carapace i 3 0 °o 8 o, and of the two x 3 (TO 5 c 7 °f the 
total length. Exposed thoracic somites increasing gradually in width. First five 
abdominal somites nearly equal in width, and about equal in width to one-fourth of the 
total length. The width of the fifth is -^Vo of the total length, and it is f-f as wide as 
the second thoracic somite. There are no submedian dorsal carinse on any of the exposed 
somites of the hind body except the sixth abdominal. The first thoracic somite is 
exposed, and, like the second, has no dorsal carinse ; the third, fourth, and fifth have 
each a pair of short lateral carinse, and the first five abdominal somites have each three 
pairs of lateral carinse, including the marginal ones, none of which, except those on the 
sixth abdominal somite, end in sjfines. The sixth abdominal somite has well-developed 
submedian, and two pairs of lateral carinse, all six ending in spines. The first four 
abdominal somites have each a small median tubercle, which can be detected with 
difficulty with a lens. The telson has a convex median dorsal ridge, which ends behind 
in a short acute spine, on each side of which there are numerous scattered rounded 
tubercles, which obscurely exhibit an arrangement in rows. The ventral surface of the 
telson is smooth, and the posterior border ends in six pairs of acute spines, with a 
tuberculated ridge over the base of each postero-median and postero-lateral ; a single 
acute tooth between the lateral and postero-lateral ; six or seven acute teeth between 
each postero-lateral and submedian, and three or four on each side between the 
tip of the submedian and the deep notch which occupies the middle line. The 
sixth abdominal appendage is long, and the paddle of the exopodite is oval, about as 
long as the second joint ; the endopodite is long, narrow, and curved ; the basal 
joint carries an acute dorsal spine, and its ventral prolongation ends in a short acute 
outer spine and a very much longer acute curved inner spine, which has a rounded 
tooth on its outer margin, and on its inner margin four or five acute curved teeth, which 
increase in size distally. The rostrum reaches nearly to the base of the ocular somite, 
(ZOOL. CHALL. EXP. PART XLV. 1886.) Yj 6 
