Boo7ie, Crustacea, Cruises of "Eagle" and'' Ara," 1921-28 73 



at the inner distal angle ; the merus is narrowed proximally, widened 

 distally with the distal margin sinuate, excavate at the inner angle 

 for the long, three-jointed palp which folds around the inner margin. 



The ehelipeds in the old males have the palms much dilated and the 

 fingers gaping ; the young males and females have much smaller eheli- 

 peds with the palm not dilated, the fingers meeting throughout their 

 length; the ischial and meral joints are each produced into a node 

 at the distal margin of both inner and outer angles, also the palm at 

 its basal angles; the lateral margins of the ischial and meral joints 

 are spinulose and set with a row of long, hooked setae; the palm is 

 scarcely as long as the fingers and is spinulose on its lower margin; 

 the fingers are slender, much incurved distally. 



The ambulatories are extremely slender and long; the first pair 

 are much the longest and have the meral joint much stouter than that 

 of any of the other legs; it is approximately two and one-half times 

 the length of the carapace; the carpus and propodus are also elon- 

 gated ; the dactyl is only one-fifth the length of the propodus, acumi- 

 nate, slenderer and less curved than the dactyli of the other legs ; the 

 second, third and fourth pairs of legs successively decrease in length ; 

 the second pair are little more than twice the length of the carapace ; 

 the third legs are about one and three-fourths times, and the fourth 

 legs about one and one-half times the length of the carapace ; the pro- 

 podi are of unequal length and are noticeably thicker distally and 

 bent upward, the margin facing the dactyli are straight and armed 

 with a series of long, curved spines set in clusters ; the distal ends of 

 the propodi are formed into rounded protuberances on the outer face 

 which reinforces the joint with the dactyl ; the dactyli are curved, very 

 acuminate; the propodus of the first leg is five times as long as its 

 dactyl; that of the second is two and one-half, of the third two and 

 one-fourth and of the fourth leg, twice as long as its related dactyl. 



Synonymy. — Podochela riisei Stimpson, Ann. Lye. Nat. Hist. N. Y., 

 vol. 7, p. 196, pi. 2, fig. 6, I860.— MiERS, Challenger Kept. Zool., 

 vol. 17, p. 11, 1886. — ^AuRiviLLius, K. Svensks. Vet.-Akad. Handl., 

 vol. 23, p. 34, pi. 4, fig. 7, 1889.— Rathbun, Proc. U. S. Nat. Mus., 

 vol. 17, p. 48, 1894; Amer. Nat., vol. 34, p. 508, fig. 1, 1900; Bull. 

 U. S. Fish. Comm., vol. 20, pt. 2, p. 54, 1901 ; Bull. 129, U. S. Nat. 

 Mus., p. 33, pi. 11, figs. 1 and 2, pi. 208, fig. 2, 1925.— Verrill, 

 Trans. Conn. Acad. Arts and Sci., vol. 13, p. 398, 1908.— Hay and 

 Shore, Bull. U. S. Fish. Bur., vol. 35, p. 453, pi. 37, fig. 9, 1918. 



