39 
EGERIA. 
Cancer, Herbst. 
CHARACTER GENERICUS. 
Testa spinosa antice rostro elongato terminata; ocudi magni 
pedunculo multo crassiores ; orbita postice bifissa inferne 
unifissa. | 
Antenne exteriores ad rostri latera insertze articulis duobus 
primis crassioribus secundo primo multo breviore. 
Pedes duo antici didactyli; Maris corpore subduplo lon- 
giores, subfiliformes aliis vix crassiores; pedes 8 postici 
longissimi, tenuissimi, consimiles (ordine 2, 3, 4 et 5) ; 
ungues elongati, subarcuati, tenuissimi. 
Pedipalpi gemini externi caulis interni articulo secundo 
latere interiore recto apice interno abrupte prominulo. 
EGERIA. 
GENERIC CHARACTER. 
Shell spinous, terminated in front by an elongate beak ; 
eyes large, and much thicker than their peduncle ; orbit 
behind with two, below with one fissure. 
External antenne inserted at the lateral base of the rostrum, 
the two first joints longer than the rest, the first much 
longer than the second. 
Legs, anterior pair didactyle; (of the Mare, about twice 
the length of the body, nearly filiform, and scarcely 
thicker than the others); four hinder pair very long, 
very slender, and of equal thickness and form (magni- 
tude 2, 3, 4 and 5); claws elongate, somewhat arcuate, 
very slender. 
External double palpes with the inner side of the second 
joint of the internal footstalk strait, with the internal 
apex abruptly prominent. 
G 2 
