MAIA. 
MAI A, Jristotelis. 
MAIA, Lamarck, Latreille, Bose, Leach. 
CANCER, Olivier, Scojioli, Herbst. Sowerby. 
Antennae externae setaceae, articulis duobus basilaribus crassionbus et longitudine subaequalibus j 
articulo primo suberassiore. 
Pedipalpi externi caulis interni articulo secundo ad apicem internum profunde emarginato. 
Pedum par anticum aliis haud aut vix crassiores : paria octo postica subelongata consimilia, 
unguibus simplicibus apice nudis, acutis. 
Abdomen 7 -articulation. 
Testa connexa ovato-subtriangularis, spinosissima, antice rostro bifurco terminata. 
Oculi pedunculo suo elongato haud crassiores. 
External antenna; setaceous with the two first joints thickest and nearly equal in length ; the 
first joint thickest. External pedipalpes w ith the second joint of their internal footstalk deeply 
notched at its internal apex. Anterior pair of legs not or scarcely thicker than the rest : the 
other legs alike in form, subelongate ; the claws simple, with their joints sharp and naked. 
Abdomen seven-jointed. Shell convex, ovate-sub triangular, very spinose, terminated anteriorly 
by a bifurcate rostrum. Eyes not thicker than their peduncles which are elongate. 
