1S77.J CRUSTACEA, CHIEFLY FROM SOUTH AMERICA. QT! 



rounded. Rami of the uropoda subequal. narrow, oblong-oval and 

 about reaching to the posterior marjm of the erminal sejmem 

 Antennae very slender; superior about half as long as the hSio ' 



a, 1^;. 1 "" ^'' "gl^t-jonited, the third joint appearing twice 

 as long as the preceding, as if consisting of two coalLent iob.t? 

 superior antennae eight-jointed. All the legs with the thi° b ^T^' 

 o long, and very little dilated posteriorly, thflastfoirpai^fwiit^ 



^^^SZZS'^^ '-"-'' -' -^--^•. length 

 Sad. Dauria, R. Onon. 



A single specimen (female with ova) is in the collection, 

 j^ In this species the coxae are inserted in the an-les between th. 

 segments of the body, in front of the anterior ''igin of each 



It is at once distinguished from the Cymothoa amurensis G-er.f 

 aecker, Mem. Acad. Imp. Sei. St.-Petersbourg. vifip 278 (\iS^ 

 by the slender femora, non-inflexed front, &c ^ ^ ^ 



LiRONECA LATICAUDA, sp. n. (Plate LXIX. fig. 5.) 



Ovate, slightly gibbous, moderately convex. Head small front in 



flexed, and concealing the bases of the antennee. First sTglnt of the 



body with the anterior margin deeply excavate antero laS Inhl! 



prominent and obtuse. Coxl of thVfollowing ;egmenttrb ong and 



inserted externally to the lateral margin of ''the^ret^ent b the 



first second, and third segments the lateral margin is Cgh't • n L 



fourth to seventh it is excavated. Terminal segment transver;e w h 



he posterior margin rounded. Rami of the Sropoda short ^vate 



he outer twice as large as the inner, but not reLhing halfway to 



^'rnr/ncTur -' ''- '-'-'■ ^-°-^ -%^ ; Vt \f ^^ 



This species cannot be confounded with the foregohig. "it sir 



S^r r::;Ss^:;"f,^- T' ?•• "•• ^^-.^^ ^^Ze), which it lit" 

 fhppnJ , ^'^ternal appearance ; in that species, however 



the epimerae are longer m proportion to their width, and the ramlof 

 the uropoda subequal. In both L. laticauda and L. novc^JeaZdZ 

 he posterior margin of the thigh-joint of the last four pafrs of t" 

 s produced at its proximal extremity and forms a strong tubercle 



^AAT^-TT' ^^''^''' ^''- S"'^- Indo.-NoeH. ii. p" 27, pT i 

 ng. 5 (180/), from Batavia, another nearly allied species the frnr.f 

 IS produced beyond the bases of the antenn J, and theToste;ior ma "4 

 of the thigh-jomts of the legs is straight. ^ 



Anilocra, Leach. 

 Anilocra trichiura. (Plate LXIX. fig. 6.) 

 Anilocra trichiura, List Crust. Brit. Mus. p. 108 (1847), sine descr 

 Narrow- oblong, oval, convex. Head small, with the anterior 



