30 Bulletin, Vanderhilt Marine Museum, Vol. II 



tour, outlined on its inner side by a slight elevation, the remainder 

 being roughened, pitted and granular. There are four blunt teeth 

 separated by concave sinuses on each side of the postlateral margin, 

 the tooth most lateral in position and one adjacent to it being the 

 largest, while the submedian tooth is the smallest and very blunt ; the 

 distal margin is rather bluntly truncated and bearing slight indication 

 of about twelve rounded granulae, the slight median incision being 

 the only definite break in the margin. 



The uropoda have a very stout peduncle with one spinule at the 

 inner angle of the outer blade; the produced under portion of the 

 peduncle consists of an acute, curved, blade-like outer spine which 

 extends as far forward as the distal margin of the proximal joint of 

 the outer blade ; the inner spine of this process is twice as long as the 

 outer, from which it is separated by a U-shaped sinus ,• the outer spine 

 is three-sided, its under face grooved, its tip curved upward and ex- 

 tending three-fourths the length of the inner blade. The inner blade 

 is unequally elongate-ovate, its outer margin being more convex than 

 the inner, and reaches as far posteriorly as the telson does ; the outer 

 blade has the basal joint smaller than the peduncle with a large, flat, 

 rounded node on its upper inner margin ; its outer distal margin 

 armed with eight articulated spines of increasing size on its outer and 

 distal margins ; there is one acute, subdistal spine on its ventral sur- 

 face ; the distal article of the outer blade is oval, twice as wide as long, 

 extending as far as the inner blade, with a heavy submedian carina 

 proximally; both blades are heavily ciliated. 



The eyes are large, reniform, set obliquely on short, thick stalks, the 

 long diameter of the cornea exceeding the length of the stalk; the 

 cornea is distinctly constricted medially and composed of very small 

 facets. 



The antennulae have the three peduncular joints clavate, subequal, 

 the upper branch of the flagellum the longest, consisting of about fifty 

 slender rings ; the longer whip of the lower branch consists of about 

 45 rings, the shorter, of about 35 rings. 



The antennae have the peduncular article large, its inner distal 

 angle with a triangulate tooth; the acicule represented by a narrow, 

 elongate, triangulate process of soft, semitransparent membrane ; the 

 second and third articles are slender, clavate, the third slightly longer 

 than the second ; the scaphocerite is three-fifths as long as the carapace, 

 oval, ciliate ; the flagellum is somewhat thicker and not quite as long 

 as the longest whip of the antennulae. 



