oj the I'ntadti-caii Faniilj I Ii|H» '1 vlitl:i'. iil 



H. No artlinihvai)clii;e on jier.TDjmds. 

 H. MiiiulibK' with iiieiM»r-proce88. 

 CI. M II IK 1 1 1)1 1> witli }iiil|). 



a. 'l"\V(i sc^'iu.'iils in cariiUM of si-cond 



|i('rii'o|»oils ('iin'</i<>u, Goom. 



b. Four »i'f,MnentH in rarpus \l*tiror(iritt, llfllcr. ^ 



lA-o/ifucurig, Stebbin^. 



c. Seven si'^'iiiiMits in (•arjm-'. 



a. Mandibular palp ot'lwo .■Jo^mu-nt.-*. S'pironfocan'g, Spence Hato 

 (inchidin;.' llcttiinis, Spt-nce Hat>', 

 KiKtlf!', 'riiallwilz, llrlia, Tliall- 

 witz, Jftfdirocfin's, de .Man, Heptd- 

 carpus, \\o\n\vs, liiruUa, Hraznikov.) 



h. ^landibnlar palj) of (luee se;,'- 



nii'iils Alojie, AVliite. 



d. More tlnin sovi'n.st'irnK'nt.^incarpus. C'/iiin's)iiu.<, Sponco Hato. 

 p. MandibU' without palp Ilippoli/te, Leach. 



[7h<ii; Kiii^sloy.] 

 [ Crypfuc/u'lcs, Siirs.] 

 b. Mandible without in(i<or-procc.«sorpalp. 

 ( =I.atriHitida\ <)i tm., pro parte.) 



(1. Two segments in carpus Trnc/ii/ran'a, pr. n. 



1^ i'oiK tiriUtt, KinL'sley.] 



fi. Three se;,'menti in carpus Lafrciitex, 8'iini])-:on 



( = PUdifhrniKt , Sp. IJale). 

 Amjitsin, Sp. Jktc (=7ci- 

 zcutnn, Stiinps(iii). 

 y. More than three sej^nunts in carpus. . h'l/f/iorari^, Sars. 



Jlippo/i/snififii, Stinip'Oii. 

 [ .1/ iiiiiirriris. Xobi I i . j 

 Li/snuiia, llisso. 



Geiiu.s Nauticaris. 



Kauticari.1, Spence Bate, Chall. Kep., Macrura, p. 002. 



No type i.s specified, but N. mariojiis, wliicii stands first 

 among the species described, may be taken as tlie type. In 

 Spence Hate'.s summary of the generic characters on p. 577 

 of tiie ' Ciiallenger' lleport the carpus of the second legs is 

 said to be 7-artietilate, whereas in tlie definiiion of tiie o;onu3 

 on J). 603 it is slated to be " multiarticulato " ; as a matter of 

 fact, I find 15-16 segments in the carjjus of co-typical 

 speciujcns. This inaccinacy appears to have misled Mr. 

 Stebbiiig in his suininary of tSpence Bate's classilication 

 (Ili.-t. Crustacea, p. 234), and, through him, i\Ir. Hodgson, 

 who has described, uniler the name Mer/iij)po.//te ausfralis 

 (Kip. ' Southern Cross,' p. 233), a form which I find on 

 ct)mparison of the type sj)ecimens to be identical with Xauli' 

 caris inurionis of the 'Challenger' Report. ]\Ir. Hodgson 

 was mistaken in supposing that the mandible of his sj)ecimen3 

 possessed an incisor- process. 



IJippolijU' nidf/tl/anicus of A. ^lilnc-Edwards (Miss. Cap 



