8(5 BULLETIN 54, UNITED STATES NATIONAL MUSEUM. 



The anterior pairs of pleopods are furnished with long hairs. 



The last segment of the abdomen is somewhat wider than long, sub- 

 triangular, with apex rather short, truncate, not furnished with spines, 

 very convex, the dorsal surface being tricarinatod and deeply and 

 equally excavate between thecarinix^; the two lateral carint^? are a little 

 divergent posteriorly, and a little arcuate. 



The uropoda are short, wide, and do not extend l)eyond the abdomen. 

 Th(> inner branch is more than twice as long as wide; the exterior 

 margin is strongly curved, and somewhat angulate a little before the 

 median line; the distal part is irregularly serrate, not furnished with 

 spines; the posterior part of the inner margin is also strongly curved, 

 almost angulate, and furnished with a few very short hairs; the apex 

 forms a very obtuse angle, and is furnished with a few long hairs. 

 The outer branch is much shorter than the iinier branch, and similar 

 in form to it. The peduncle has the inner angle not produced, and 

 not reaching the middle of the inner branch. 



The color is a brownish yellow, somewhat grayish.'^' 



«The above description is adapted from the following description of Hansen's: 



Diagn. Corpus breve, duplo longius quam latins. Capnt et in lateribus et ante 

 angnlatum. Lamina frontalis ante bnllam. magnam, apicem capitis jmulo superan- 

 tem, formans. E^^imera majora, per paria postice plus producta et altius carinata, 

 angulo i)osteriore subacnto. Segmenta 5 anteriora candte perbrevia. Segmentnm 

 ultiinuin cauda^ uropoda vix superans, subtrigonum, apice subtruncato, dorso alte 

 tricarinato et inter carinas excavato. Uropoda brevia, lata; ramus uterqne margine 

 exteriore valde excurvato ibique fere angulato, parte distali irregulariter inciso- 

 serrata, margine postero-interiore valde excurvato; ramus interior ramo exteriore 

 multo longior. — Long. 4, 25 mm. 



Corpus sul)ovatum, duplo longius quam latins, sat convexum. Caput in lateribus 

 angulum prominuh;ni formans, ante in processum frontalem angustiorem sat longum 

 productum, margine inter angulum lateralem et basin processus frontalis subrecto, in 

 superticie capitis carinam manifestam formante. 



Oculi minuti, solum in latere superiore capitis in processu angulato inventi, ex 

 ocellis paucis, sat convexis formati. 



Lamina frontalis parte basali valde angustata, ex parte sub cornu clypei obtecta, 

 ad apicem versus valde dilatata, alte prominens, parte apicali inflata, ante late 

 rotundata, ultra processum frontalem nonnihil prominente et cum hoc processu 

 conjuncta. 



Clypeus perl)revis, a basi in cornu brevius, acutum ])roductus. 



Antennulic jiedunculo antennarum aliquanto breviores; pedunculus flagello duplo 

 longior, 8-ai'ticulatus, articulo ))asali brevi; tlagellum c. 4-articulatum, articulo 

 basali elongate, articulis 8 ultimis perminutis. 



Antennte paulo uhra marginem j^osteriorem segmenti secundi trunci prominentes; 

 pedunculus crassior, articulo quarto multo longiore quam articulo tertio et nonnihil 

 breviore quam articulo quin to; tlagellum c. 12-articulatum. Mandilmla? acie latiore. 

 Maxillipedes fere ut in C. japonica. 



Segmenta trunci longitudine minus ina-qualia; segnu'utum i>rinnnn capite nonni- 

 hil brevius et segmento quinto nonnihil longius; segmenta sextum etseptimum long- 

 itudine subiccjualia, stria transversa projje marginem anteriorem ornata. Epiiwera 

 majora, postice jtroducta, in ()l)li(iuum carinata (carina furca imprimis in epimeris 

 postcriorilius latissima et ]irofundissima, excavationem formante, definita), jiostice 



