ATELECYCLUS. 
ATELECYCLUS. Leach . 
CANCER (Hippa). Montagu . 
Animnce extcriores corporis dimidio longiores, setacem, utrinque ciliat® ; segmento tertio ex 
articulis elongatis cylindricis effecto. • 
Pedipalj i gemini extend , caulis intend articulo secundo breviore'ad apicem internum producto et 
ad latus internum apicem versus emarginato. 
Pedes decern, par anticum majus, asquale, didactylum, digitis deflexis ; maris corpore longius 
manu compressa ; feminjE corporis longitudine manu compressa : paria reliqua tibiis 
tarsisque longitudine ®qualibus, unguibus recti s, elongatis, quadratis, longitudinaliter 
sulcatis, ad apices teretibus, acutis, nudis (postices obscure subcompressis.) 
Abdomen maris 5-articulatum ; articulo primo transverso-lineari ; secundo duplo longiore ; 
tertio valde el ongato, apicem versus angustiore, apice subrecto ; quarto subquadrato, 
angulis anticis productis ; quinto lageniforme, apice acutissimo : 
FeminvE articulis 1, 2 , 3 , 4 et 5 transversis longitudine vix diversis; articulo sexto 
transverso-quadrato antice emarginato ; articulo ultimo elongato-subtriangulari pos- 
tice subproducto. 
Testn subcircularis lateribus sensim postice in angulum convergentibus postice truncata et 
granulari-marginata ; orbita postice externe fissuris duabus, inferne externe fissura una. 
Oculi pedunculo angustiores. 
External antennee longer than half of the body, setaceous, ciliated on each side; the third 
segment composed of elongate cylindric joints. External double feetpalpes, with the second 
joint of their internal footstalk shorter than the first, produced at its interior apex, and towards 
its internal side notched. Legs ten : anterior pair largest, didactyle ; fingers deflexed : of the 
male longer than thq body with the hand compressed : of the female of the length of the body 
with a compressed hand : other legs with their tibia; and tarsi of equal length ; claws straight, 
elongate, quadrate, longitudinally sulcated ; their joints rounded, naked, sharp, hinder ones 
obscurely subcompressed. Abdomen of the male five-jointed : first joint transverse-linear ; 
second twice as long; third very long, narrower towards its extremity, apex nearly strait; 
fourth nearly quadrate, the anterior angles produced ; fifth flask-shaped, its point very sharp : 
of the female with the first five joints transverse and scarcely differing in length; sixth joint 
transverse-quadrate anteriorly notched ; seventh joint elongate-subtriangular, slightly produced 
behind. Shell subcircular, the sides gradually converging into an angle behind; posterior 
margin truncate, and granulate-margined ; orbit behind externally, with two fissures, below 
externally, with one fissure. Eyes narrower than their peduncles. 
