150 "ENDEAVOUR" SCIENTIFIC RESULTS. 



high, its border having an antero-lateral angle on either side. 

 Between these angles there is an irregular row of small pits 

 or depressions in the pubescence which are to be seen only 

 when viewed from before. A deep median depression on 

 the frontal region ; a short, deep furrow each side of the 

 cardiac region, ending anteriorly in a pit, where it meets 

 the well-marked cervical suture ; another furrow passes 

 behind the cardiac region and forward to the cervical notch ; 

 intestinal region depressed, from it a furrow runs laterally 

 just in front of the posterior margin. 



Median tooth of front narrow, acute, and so denexed 

 that only the tip is visible from above ; lateral teeth widely 

 separated, their outer margins' continued by a rounded 

 sinus to a tooth at the inner angle of the orbit ; this frontal 

 border is conspicuously fringed with long setas. A fissure 

 marks the outer angle of the orbit; while a triangular, 

 pointed tooth occupies the greater part of the lower border. 

 The anterior part of the antero-lateral margin is concave, 

 the remainder is convex ; the two parts meet at a blunt, 

 obtuse angle. There is a slight tooth behind the cervical 

 suture, otherwise the lateral margin is entire. 



The edge of the epistome is nearly horizontal; the outer 

 tooth is broadly triangular. 



Chelipeds rather small, shorter than the first two pairs 

 of walking legs. The carpus and manus are ornamented 

 with about four longitudinal rows of elongated sets which 

 simulate ridges. The pubescence on the fingers forms a 

 triangle on their outer faces, the margins bare and white. 

 The propodal finger has four large prehensile teeth, two of 

 which are terminal and fit tight against the tip of the 

 dactylus. The dactylus is flat outside except its upper 

 margin, which forms a raised rim. 



The first two ambulatory legs are rather narrow; their 

 carpal and propodal segments are ornamented similarly to 

 those of the cheliped. The fourth leg is slender, much 

 longer than the third but not so long as the second. The 

 propodus of the third, very short, leg has at its distal end, 

 besides the spine which forms a chela with the dactylus, 

 three small, slender spines or spinules on the outer surface. 

 The propodus of the last leg has a spine at each of its 

 distal angles, that at the lower angle very little shorter 

 than the other, which forms a subchelate arrangement with 

 the dactylus. 



