CARIDEA. 585 



the palpus of the outer maxillipeds is considerably shorter than the 

 second joint. 



PAL^EMON DEBILIS. 



Rostrum praslongum, gracile, paulo recurvatum, squanid antennali multo 

 longiw, apice biftdum, dimidio apicali supra integro, basali <i6-den- 

 tato, margine inferiore Q-9-dentato. Antennarum internamm flayella 

 duo longd conjuncta. Pedes nudi, inermes ; \mi 2dique inter se siib- 

 cequales, parvuli, gracillimi, manu dimidio carpi paulo longiore, non 

 incrassatd. Flayellum minus antennarum internarum perbreve. Var. 

 a, Rostrum supra 4-dentatum, infra 6-dentatum ; var. 0, attenuatus, 

 Rostrum longissimum, supra Q-dentatum et infra Q-dentatiim. 



Beak very long and slender, a little reflexed, much longer than basal 

 scale of outer antennae, bifid at apex, apical half above entire, basal 

 half with four to six teeth, inferior margin with six to nine teeth. 

 Two flagella of inner antennas united for a considerable distance. 

 Feet all naked and unarmed ; first and second pairs subequal, quite 

 small and slender, hand longer than half the carpus, not incrassate. 

 The smaller flagellum of inner antennae very short. 



Plate 38, fig. 6, cephalothorax, enlarged two diameters. 

 Sandwich Islands. 



Length, 1-1 i inches. Beak in the common variety one-fourth to 

 one-half longer than antennary scale ; first spine or tooth of upper 

 margin (counting from extremity), is nearly over the fifth of the lower 

 margin. The posterior tooth of beak is situated but little back of line 

 of eyes, and the next one is just anterior to this line. Hands nearly 

 naked ; fingers of second pair a little shorter than half the hand. 



Var. attenuatus (fig. 7, Plate 38, enlarged two diameters). A speci- 

 men from Hilo, Hawaii, has the hands equal, and feet naked and 

 slender, as in the preceding ; but the beak is much longer, being two- 

 thirds longer than the antennary scale, and there are six teeth to 

 basal half of upper margin, and nine teeth below. The specimen is a 

 female. It is, probably, a variety of the debilis. 



147 



