REPORT ON THE STOMATOPODA. 59 



Rostrum consisting of a transverse proximal portion more than twice as wide as long, 

 with subacute 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 (xH) t^ian 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 earinaj 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 carinse on the first five abdominal segments. The sixth 

 (see PI. XIV. fig. 4) has a short unarmed median carina and three pairs of lateral carinse, 

 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 carinse project beyond the 

 posterior edge of the somite, while those of the intermediate carinas 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 -ndder than long (j-ff) 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 "\dew, fig. 1, with the surface view showTi in 

 fig. 4. The median portion is occupied by' a hemispherical prominence, upon which 

 are five meridional carinse, 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 prominence without a keel, and a 



