I'LATYSCKLIIl.i;. 'S67 



jdints bt'iuliiii; uj.on each othor. (.iiiuthopoda simi)le, inoiiodaetyk'. 

 IViviopoila {gradually increasing in length to the third pair : first 

 two pairs cylindrical ; basa of the last three pairs large, Hat, and 

 circidar ; t'ourtli pair shorter than the third ; iifth ha\'ing the 

 joints after the bases represented by a tubercle. First three seg- 

 ments of the i)leou large ; three following having the appendage 

 straight, Hat, long, and terminating in two little lamellic rounded 

 at the extremity. TeLson short and triangular." — Condensed 

 from Guerin. 



1. Prouoe capito. (Plate LIII. fig. G.) 



Pronoe capito, Guerin, Mut/. de Zool. vii. 1836, pi. 17. f. 3. 

 Edicurds, Hkt. des Crust, iii. 



^Superior antenme having the terminal joint long. Hat, and obliquely 

 tnmcate (resembling those of Vibilia) : inferior antenna) live- 

 jointed ; fii'st and second joints subequal, thii'd short, fourth nearly 

 as long as the second, terminal nearly as long as the foiuth. (jna- 

 thopoda imiform, not ha\-ing the carpus infero-antcriorly pro- 

 duced. First two pairs of pereiopoda uniform, cyliudi'ical : tliird 

 jKiir long, having the basos dilated ; ischium articulating with 

 the basos at its apex ; remaining joints twice or thi-ice as long 

 as the basos : fom'th pair ha\'ing the basos more dilated than the 

 third ; ischium articulating at the apex of the basos ; remaining 

 joints little longer than the basos : fifth pair short, broadly dilated ; 

 remaining joints represented by a tubercle. Posterior pair of 

 pleopoda reaching considerably beyond the telson. Telson small, 

 triangular, not more than one-third of the width of the preceding 

 segment at the base. 



Length ^ of an inch. 



Ilab. Coast of Chili (J/. Ga>/). 



The description of the species depends upon the correctness of 

 M. Gueiin's figure in the work quoted. 



2. Pronoe brimnea. (Plate LIII. fig. 7.) 

 Pronoe bnmnea, Dana, TJ. S. Explor. Expcd. p. 1015. pi. 09. f. 5. 

 " Cejjhalon subtriangidar, not oblong, obtuse in front; jngments of 

 the eyes nearly filling it. Pereion appearing in a dorsal view but 

 five-jointed. Picon six-jointed. Telson small, tnangiilar, sub- 

 acute at apex. Inferior antennic long, five-jointed ; first, second, 

 luid third joints long and equiJ ; fourth about half shorter; fifth 

 (juitc small. Uasos of fourth pair of pcreiop(Kla much the broad- 

 est, obli(iuely subovate, ajx'x proininriil . obtuse; remaining joints 



