152 "ENDEAVOUR" SCIENTIFIC RESULTS. 



' ' The carapace is broader than long, and strongly convex. 

 It is covered with coarse, erect hairs, which have a brush 

 of minute lateral sets 1 near their tip. The cervical groove 

 is usually distinct, sometimes rather indefinite. A median 

 longitudinal groove between the orbits, and a broad, shallow 

 one on each side of the cardiac region. Front cut into 

 three teeth, of which the middle one is on a much lower 

 plane than the others ; in the smallest specimens it is 

 directed downward, and in the other projects somewhat 

 forward. The outer teeth form the inner orbital angle. 



"The orbits have a conical tooth in the centre of their 

 upper border, which is sharper on the young. The outer 

 angle is prominent, sometimes forming a tooth, and below 

 it there is a V-shaped notch which may be broad, or very 

 narrow. Inner angle of the suborbital lobe dentiform. 

 The antero-lateral borders are armed with four or five 

 teeth which are variable, the small specimens having four 

 and the larger ones four or five; in some examples the 

 fourth tooth is replaced by a blunt lobule, while others 

 have a small denticle at the base of the fifth tooth. Postero- 

 lateral borders slightly convergent, and they have either a 

 blunt tooth, or a lobule immediately behind the cervical 

 groove. 



"The subhepatic region is swollen into an obtuse pyra- 

 midal projection. The antero-external angle of the buccal 

 cavern is spiniform, and there is a conical tubercle a little 

 farther back. A broad spiniform tubercle projects obliquely 

 inward and backward on the basal antennal joint, and both 

 the inner and outer angles of the second joint are produced. 

 The ischium of the external inaxillipeds is longer than 

 broad, and is divided anteriorly ; its surface is slightly 

 hollowed. The merns is pentagonal, and is much longer 

 than broad, the outer surface is usually somewhat sinuous. 

 The palp is attached below the anterior internal angle. 

 The exopod is about three and one-half times as long as 

 broad, and its greatest width near the base is about half 

 that of the merus. " 



The inner and outer edges of the ischium and rnerus of 

 the chelipeds bear rows of rounded tubercles. The inner 

 angle of the wrist is armed with a large obtuse spine, and 

 the antero-internal edge bears, in the larger specimens, 

 rounded tubercles. The crests of the hands bear from one 

 to seven similar tubercles. The last two pairs of legs 



