228 Bvlletin Vanderbilt Marine MTiseum, Vol. VI 



the inferior lateral margin is armed along its entire length with 

 ten acute teeth ; the dactyl is small, acuminate ; not as long as the 

 median width of the propodus and not projecting as far as the 

 apical tooth of the opposed carpus. 



The first pair of legs has the sideplates a bit wider than the 

 preceding pair; the third sideplates have the inferior margin 

 semioval; the first joint is elongate, bent near the proximal end, 

 about four times as long as wide ; the second joint is short, elbow- 

 like, scarcely as long as the width of the preceding joint ; the third 

 joint is clavate, about two-fifths as long as the first joint and 

 wider distally ; the fourth joint is a little shorter and not quite so 

 thick as the third joint; the fifth joint, or propodus is three- 

 fourths as long as the first joint, but very slender, with the in- 

 ferior lateral margin pectinate ; the dactyl is short, not quite twice 

 the median width of the propodus, very acuminate. 



The second pair of legs is quite similar to the first pair, but 

 is slightly larger, in the ratio illustrated (PI. 68, fig. E.), the 

 propodus of the second pair being about one-fifth longer than the 

 propodus of the first pair. 



The third pair of legs has the sideplates nearly one and a 

 half times as wide as deep, with the inferior margin sinuate, the 

 anterior angle rounded, and the posterior angle produced and 

 rounded. The first joint is greatly expanded, but with the anterior 

 lateral margin very little convex, and produced at the anterior 

 distal angle into a rounded lobe that extends beyond the posterior 

 distal angle; the posterior lateral margin and distal angle are 

 widely rounded ; the length of this joint is equal to one and three- 

 fifths times the greatest width; the second joint is short, not 

 extending beyond the anterior distal angle of the preceding joint; 

 the third joint is clavate, wider distally, its length equal to three- 

 fourths of the median width of the first joint; the fourth joint 

 is almost as long as the preceding joint, but less thick, convex; 

 the propodus is slender, one and one-half times as long as the 

 preceding article ; the dactyl is one-sixth as long as the propodus, 

 curved, acuminate. The anterior distal angle of the lateral margin 

 of the first joint, also the anterior lateral margins of the third, 

 fourth and fifth joints of the third legs, are finely pectinate. 



The fourth pair of legs has the sideplate a nearly square 

 parallelogram, with the posterior lateral margin slightly convex 

 and the posterior angle acute; the first joint greatly expanded, 



