ORCHESTIDai;. 33 



the body ; base rather lonj^, flagellum longer than base, seventcen- 

 to eighteen-jointed ; joints quite oblong ; seta; few, not longer than 

 diameter of joint. Supenor antenna; long, hardly shorter than base 

 of inferior ; ilagellum seven-jointed, joints long. Anterior gna- 

 thopoda imperfectly subchelate, almost unguiculate ; the propodos 

 oblong, narrower at apex, and not properly truncate ; dactylos a 

 little longer than the width of the joint. Second pair of gna- 

 thopoda with the propodos subspatulate, narrow, minute ; dactylos 

 subapical, nearly transverse ; meros gibbous and fine, scabrous 

 below, Pereiopoda slender; first and second pairs long, third 

 not shorter than second, the throe posterior gradually increasing 

 in length ; setae of propodos of fifth pair equally long on both 

 margins, and not longer than the diameter of the joint, six sets 

 below, seven above. Outer branch of first pair of stylets naked, 

 a very long apical seta. 

 " Length eight or nine lines. 



*' Hah. Oahu or Kauai, Hawaiian Islands." — Dana. 



28. Orchestia TaMtensis. (Plate V. fig. 8.) 



Orchestia Tahitensis, Dana, U.S. Explor. Exped. p. 877, pi. 59. f. 5. 

 Orchestia rectimana, Dana, Proc. Amer. Acad. Sci. Bost. ii. 203. 



" Female. — Coxae rather broad, margin minutely setulose. Inferior 

 antennae about half as long as bodj'; flagellum little longer than base, 

 the joints a little oblong; setae not longer than diameter of joints. 

 Superior antennae one-third shorter than base of inferior ; flagellum 

 about seven-jointed. Gnathopoda quite small ; first pair* ha^■ing a 

 minute claw and a short palm to propodos ; propodos of second 

 pair oblong, spatulate, with rounded apex, minute ; dactylos lateral 

 and longitudinal, hardly reaching to apex of joint. Two anterior 

 pairs of pereiopoda subequal, last three pairs not very unequal ; 

 basos very broad, and posterior margin setulose, seta; of propodos 

 verj' short. 



" Length one-fourth to one-third of an inch. 



" Hab. In damp places among leaves, and under rotten wood in 

 the damp earth, at 1500 feet elevation, on the island of Tahiti, 

 several miles from the sea." — Dana. 



29. Orchestia Euchore. (Plate V. fig. 9.) 



Orchestia Euchore, Fr. Mailer, Wiegm. Archivfiir Nattirg. 1848, p. 01, 

 t. 14. f. 1. 



Male. — Eyes round. Superior antennae not reaching to the extre- 

 mity of the penultimate joint of the peduncle of the inferior. In- 

 ferior antennfo linving tlie pedtindc ns long as tlio flagellum. which 



