MACROPODIA. 
INACHUS. Fabdricii. 
CANCER. Herbst, Pennant, Villers. 
MAJA. Bosc. 
MACROPUS. Latreille. 
MACROPODIA. Leach. 
Antenne externe distantes, corporis dimidii longitudine setacee, ante oculos ad rostri latera 
inserte ; articulo secundo primo triplo longiore. 
Pedipalpi gemini externi tenues caule interno biarticulato, articulis longitudine subequalibus ; 
I palpi triarticulati hirsutissimi. 
Pedum par anticum majus, didactylum, wquale (maris corpore duplo longius ; manibus elongato- 
subovatis, compressis; carjis manibus duplo brevioribus, angulatis; brachiis manuum 
longitudine angulatis: rumin# corporis longitudine, manu subfiliformi): paria 4 postica, 
longissima, tenuissima: ungues 4 antici ad apicem arcuati; 4 postici ad basin abrupte curvati. 
Testa subtriangularis parce spinosa, antice rostrata, rostro longo, fisso. 
Oculi distantes, subreniformes, pedunculo multo crassiores, in orbitas haud retractiles. 
Abdomen 6-articulatum, tuberculato-subcarmatum : 
Maris articulo primo longiore, secundo angustiore, tertio posticé latiore, quarto angustiore, 
quinto et sexto abrupte angustioribus, hdc ad apicem abruptissimé angustiore, rotundato. 
Femin articulis primo angustiore, allis caudam ovatam efformantibus, ultimo ad apicem 
abrupté producto, rotundato. 
External antenne distant, half the length of the body, setaccous, inserted at the sides of the 
| rostrum before the eyes; the second joint three times the length of the first. External double 
palpi slender, the internal footstalk two-jointed, the joints of nearly an equal length: palpi three- 
jointed, and very hairy.. Anterior pair of legs largest, didactyle, equal (of the male twice the 
Mength of the body, the hands elongate-suboval, compressed ; wrists half the length of the hands, 
ir ngulated ; arms of the length of the hands and angulated: of the female as long as the body, the 
\hand subfiliform): four hinder pairs very long, very slender: four anterior claws bent at their 
tops; hinder claws abruptly bent at their base. Shell subtriangular, subspinose, rostrated in 
front, the rostrum long, cloven. yes distant, subreniform, much thicker than their peduncles, 
‘not retractile within their orbits. Abdomen six-jointed, tuberculate-subcarinated (of the male 
With the first joint largest, the second narrower, the third broader behind, the fourth narrower, 
the fifth and sixth abruptly narrower, the latter at its apex abruptly narrower and rounded : 
of the female with the first joint harrowest, the other joints forming an ovate tail, the last joint 
| with its apex abruptly produced and rounded). 
__ There are but two species of this genus known, and with their habits I am unacquainted. 
