144 Bulletin Vanderbilt Marine Museum, Vol. VI 



two-thirds as long as the carapace and thick-ringed for the proxi- 

 mal half of its length; the longer branch is very fine, one and 

 one-half times as long as the carapace. 



The antennae have the peduncle subequal in length to that 

 of the antennulae and support a scaphocerite which is subequal 

 in length to the two peduncles, the scaphocerite having its outer 

 margin thickened, the outer lateral contour moderately concave; 

 apex acuminate, projecting beyond the rounded, narrow, inner 

 portion and dorsally defined from it by a flat carina; the inner 

 portion widens proximally and is fringed with setae along its 

 entire margin ; the antennal flagellum is very fine and quite long, 

 being one and one-third times the body length. 



The external maxillipeds are pediform, extending not quite 

 as far as the antennal peduncle, but heavily fringed with long 

 stiff bristles that do project substantially beyond this point. 



The great cheliped is missing from all three specimens. (Con- 

 sult Dr. de Man, "Siboga," for figure and description. 



The lesser cheliped of the male is, according to Dr. de Man's 

 excellent description, nearly as long as the great cheliped, but not 

 so large otherwise. The small cheliped of the present specimen has 

 the merus trigonal, with all three lateral margins carinate, the inn- 

 er inferior lateral margin spinose-granulose, the inner lateral sur- 

 face closely appressed to the carapace ; the inferior face wider 

 distally and concave ; the outer lateral face irregular ; the carpus 

 is short, rounded, with the upper surface distally laminate-exca- 

 vate; the propodus has the palm slightly longer than the merus 

 and the fingers four-fifths as long as the palm ; the palm is one- 

 half as high as long, with the inner and outer faces moderately 

 convex, a circumscribed elliptical-oval area on the proximal inner 

 and upper faces ; running forward from this on the inner face a 

 short longitudinal sulcus, vague, but reaching half-way to the 

 base of the finger. There is a distinct transverse shallowness or 

 termination of the upper margin of the palm at the base of the 

 upper finger and on the outer lateral surface of the palm a small 

 spine occurs at the base of the lateral border of the dorsum of 

 the finger. A similar less acuminate denticle occurs on the inner 

 lateral margin approximately with the same location. The pro- 

 podal finger is five-sixths as long as the palm, somewhat oblique, 

 with its cutting edge a deep concave trough, the outer lateral 

 margin carinate, the inner lateral margin but little less so ; some- 



