164 Bulletin Vanderbilt Marine Museum, Vol. V 



and the upper surface covered with sharp procurved spines set in 

 longitudinal series, those along the upper margin being the largest 

 and crest-like. The fingers are slightly deflected with pointed tips, 

 the cutting edges meeting, set with rudimentary denticles; the outer 

 surfaces are brownish black. The upper finger is curved with a crest- 

 like row of sharp spinules on its dorsal edge. 



The ambulatories are moderate in size, quite shaggy, with long 

 setae along the upper lateral margins and have a series of obliquely 

 outward directed sharp spines along the upper lateral margin of the 

 merus, carpus and propodus. The merus is expanded with its distal 

 angles bluntly rounded ; the carpus and propodus are stocky, subcyl- 

 indrical, as is also the dactyl, which is short, tapered, setose on both 

 upper and lower lateral margins and with the interior distal angle 

 of the proximal margin produced in an angular thick process, extend- 

 ing upon the propodal margin to reinforce the strength of the joint. 

 There are a series of horny spines along the inferior lateral margin 

 among the setae. The tip of the dactyl is a curved strong claw and 

 above it in triangulation arrangement are three horny spines on the 

 distal upper lateral margin. 



The eye is rather large, with a fleshy stalk and hemispherical 

 cornea, set terminally and having a good range of vision in all 

 directions. 



The antennulae fold transversely in the small, rather open fossett 

 beneath the frontal border. The interantennulary septum is short; 

 the basal peduncular article of the antennulae has a sharp brown cal- 

 careous spine on its outer lateral margin, the remainder of the exposed 

 surface being soft and light cream color; the second article is also 

 light and flesh colored; the flagellum is multiannulate, short, with a 

 thick brush of setae on its upper lateral margin. 



The antennae have the basal peduncular article set obliquely be- 

 tween the frontal margin and epistome forming the outer border of 

 the antennulary fossett and having the distal external angle produced 

 into a large lanceolate-acuminate process that lies within the orbital 

 sinus and fills it; the second and third peduncular articles are re- 

 duced, cylindrical, and the slender flagellum consists of about ten 

 articles and is no longer than the antennulae. 



The external maxillipeds are rectangular, much wider than long, 

 the exognath long and narrow, its outer lateral margin being rounded 

 and tapered distally. The endognath has the ischium somewhat sub- 



