YASUKAWA LiT AI 



— FHYLOCil N\- ()!• GEOENn i)INI I UK I LES 



115 



species, llie senaiioii was absciil m weakly 

 developed only in yoLiiig iiidivieliials. W'e 

 coded I Ills character as: (0) ahseni, or weak 

 and iMiK ill voiiii!.' iiuliv iduais; (I) siroiiL'. 



24. I .()ii;^.iHiiliiiul kcch on curupucc 



( 'hini'iiivs, ( h'oc/cin ys and Mi/li/vc/n vs o\ 

 baiagiH ines, and Clcoc/nyda, Mchinoc/w/ys, 

 and Pyxidcd of the geoeinydines had three 

 longit uilinal lows ol sirt^ng keels on the 

 carapace with distinct ridges on the bony 

 plates. In the other batagurid species, only 

 the mcdKi! keel was uMialU Lle\eiopeLl: tlie 

 lateral keels were absent or, if present, very 

 weak wiihoul distinct ridges on the bony 

 |ilatcs. We coded this characlei as: (0) 

 ucak, usually in a single row; (1) inonn- 

 iiein, in three rows. 



25. Anterior part of neural hones 



In llicrcntys of the bataguiines and ilic 

 get)eni \ il 1 lies exclusiv e ol \li/ii/i'in vs, 

 .Sdcalui. and \ii!<)chc/vs , ilie anlciioi 

 neurals were usuallv liesaL'unal wiih posie 

 rior sides shoiiei than anieiioi sides. In 

 the other sjiecies, ihe neurals were also 

 usually hexagonal bin the anterior sides 

 weie siuMiei than the posieriiM sides. We 

 eodeil (Ills cliaiacier as: (0) slum-sided 

 anteriorly; (1) shori-sided posieiioily. 



2^). ,S';/////'('s hdwccn hilcriil \i(U"^ of 

 scvcnih !///(/ ci'.ililh plcuiuls 



111 iiiosi bataguiids, the sesenili and 

 eighth pleurals on each side were sepa- 

 ratetl tty the eighth neural and ihc aiite- 

 iioi supiapv i'al. In ( '/v/fx /cmmv.v, Cuorii 

 anihoiiii'nsis , and Rlunoclcnmivs rtihula, 

 ihe eighth neiiiai and the anterior suprapy- 

 gai weie iisiialK ahscni, and the lateral 

 sides ol seventh and eighth plemals were 

 sutured with each other. We coded this 

 character as: (0) absent; (1) ineseni. 



27. ( loiiciil hiirsae 



Ihe cloacal buisae were present in inosi 

 bat.ii'ui uls, while it was much rciluced or 

 completely Kvsi in (l.sloclctnrux l^vxitica. 



and Gc'ocinydi/ . W e could iioi e\aiiiiiie the 

 condition ol this characlei in liaicr^iir and 

 (Icoclcnmivs. We coded this character as: 

 ((I) present; (I) niiicli reduced or lost. 



2(V. . {.xU/Liry />U/\lri/! hmircss 



In C lunciuvs , / / w/f/iivs , and Morrnui of 

 the bataguriiies, and in most gei)eniydines 

 having no plastral hinge, the dorsal portion 

 ol the axillarv iilasiial buitress was 

 comiected around the portion between the 

 peripherals and the coslals, and the 

 connected iioiiioii was disiincily concave. 

 In all geoemydines having a plastral hinge 

 (Cyclcnivs, .'Vo/oc/zi'/rs. C'liora, Cisioclcni- 

 iiiv\, aiKl I'vxulcu: see above) the dorsal 

 l")ortion o\ the Iniiiiess was verv slum and 

 connected lo ihe peripherals, and the 

 connected j'loition was not or only scarcely 

 concave. In Muitrcfuys unnaiiicnsis of the 

 geoemydines, and in Cicoclcniys, Malay- 

 cnivs, Oi/iiiii. and Sichcnrockiclla ol' the 

 bataguiines, ilie dorsal pi>rtion of the 

 biiiiiess was long, expanded, and strongly 

 coniieciCLl lo ilie cosials. and the connectetl 

 poilioii was disiincllv concave. in the 

 oiliei bata;juiines, ihe buttress was much 

 more develoi"'cd than in \l. unnamensis, 

 Mulayctuys, Orlilia, and .Sichcnrockiclla, 

 and was very strongly connecied lo the 

 coslals. .liniosi reaching the ribs. W'e 

 coded ihis character as: (0) very strongly 

 connecied to costals, almost reaching ribs; 

 (I) siionglv connected to costal.s; (2) 

 connecied around the portion between 

 perijiherals anil costals; [}) weakly con- 

 nected to the peripherals. 



JV. In\iuuial plusirul huiircKS 



In Chinemys, Xfalayemys. Xforenia, 

 and (Orlilia ol" the baiagurincs. and most 

 geoemydines. the dorsal portion of 

 inguinal pla.s!ral buiiress was connected 

 around the suture between the peripher- 

 als and the costals. and the connected 

 portion was distinctly concave. In Maur- 

 cmv.'i annamvusts. Gfoclf/nvs, and .Si*"- 

 hcnrocku'llti. the dorsal portion of the 



