EBALIA. 
CANCER, Pennant, Montagu. 
LEUCOSIA. Leach Trans. Linn. Soc. xi. 333. annot. 
Antenne externe setacee minutissime in oculorum cantho interno inserte ; 
interne mediocres in foveolas obliquo-transversas inter oculos recepte. 
Pedipalpi externi cauli interno sensim acuminato, articulo secundo interné palpigero: cauli 
externo flagro nullo instructo, 
Pedes decem ; par anticum majus equale depressum didactylum, brachiis subangulatis ; maris 
illo ramrin#& longius ; paria alia ambulatoria, ungue simplici instructa. 
Abdomen 7-articulatum, articulis mediis confluentibus; Maris angustum a segmento tertio 
sensim acuminatum, articulo ultimo basi unituberculato; ra@min& amplissimum medio latius, 
articulo ultimo parvo penultimo abrupté angustiore. 
Testa rhomboidalis, lateribus integris, fronte subproducto. 
Oculi minuti frontales. 
External antenne very minute, setaceous, inserted in the internal corner of the eye. Internal 
antenne moderate in size, received into oblique-transverse foveole between the eyes. External 
pedipalpes with their internal footstalk gradually acuminated; the second joint internally 
palpigerous: external footstalk without the usual appendage. Legs ten ; anterior pair largest, 
equal, depressed, didactyle, with the arms somewhat angulate ; of the male longer than that of 
the female ; other pairs formed for walking and terminated with a simple claw. Abdomen 
seven-jointed, the middle joints confluent ; of the male narrow, gradually acuminated from the 
third joint ; of the female very large, broader in the middle, with the last joint small and 
abruptly narrower than the preceding joint. Shell rhomboidal, with the sides entire and the 
front slightly produced. Eyes minute, frontal. 
