590 CRUSTACEA. 



Length of body, two inches. The teeth of beak range along its 

 whole upper margin, and are nearly equidistant throughout; those 

 below are very short. The fingers of the hands of second pair are 

 about two-fifths whole length of hand ; the carpus is nearly twice as 

 long as the arm. 



Pal^mon acutirostris. 



Rostrum lanceolatum, apice non recurvatum, squama antennali non 

 longius, supra 14:-lQ-dentatum, dentibus confertis, usque ad apicem 

 continuatis, infra k—^-dentatum. Maxillipedes externi mediocres. 

 Pedes antici gracillimi, manu dimidii carpi longitudine. Pedes 2di 

 longi, tenues, omnino bene scabri, manu parce crassiore et duplo lon- 

 giore quam carpus, digitis dimidio manus brevioribus, apice carpi 

 rostrum paulo superante. Pedes sequentes inermes. 



Beak lanceolate, not reflexed at apex, not longer than basal scale of 

 outer antennae, fourteen to sixteen teeth above, teeth crowded and 

 continued quite to extremity, four to five teeth below. Outer max- 

 illipeds of moderate length. Anterior feet very slender, hand half 

 as long as carpus. Second pair long, slender, strongly scabrous 

 throughout, hand but little stouter and twice longer than carpus, 

 fingers not half as long as hand, apex of carpus reaching a little 

 beyond extremity of beak. Following legs unarmed. 



Plate 39, fig. 1 a, a', cephalothorax of different specimens, natural 

 size ; b, eye, base of inner antennae, and part of anterior margin of 

 carapax, and lower margin of beak. 



Sandwich Islands. 



Length of body, two and a half to three inches. Teeth of beak 

 covering whole upper margin, and second upper tooth (counting from 

 extremity) situated over first lower; the last upper tooth one-third 

 the length of the cephalothorax, back of the line of the eyes. Fla- 

 gellum of outer antennae naked and not pubescent as in the P. grandi- 

 manus. The hands of the second pair of legs are very closely sca- 

 brous even to the tips of the fingers, and have but few hairs in any 



