674 CLASS X. 
feet with last joint lamellose, lanceolate or oval. Shell suborbicular, 
with anterior margin dentate, with a strong spine on each side pro- 
duced above the second pair of feet. 
Sp. Matuta victor Fasr., Rumpu. Amb. Rariteitk. Tab. vil. 8, DESMAR. 
Crust. Pl. 7, fig. 5 ; in the Indian Ocean, also in the Red Sea. 
Orithyia DAuD., FABR. Shell muricate oval, truncated anteriorly. 
Fifth pair of feet terminated by an oval lamina. 
Sp. Orythia mamillaris FaBr., DesMaR. Crust. Pl. 19, fig. 1, GUERIN Iconogr., 
Crust. Pl. 1, fig. 2; from the Indian Ocean and the coast of China. 
Mursia LEACH. 
Platymera Evw. 
Calappa Daup., Fasr, External antenne short, with basal 
joint broad. Shell short, convex, broader posteriorly, covering 
with its margin produced the contracted feet. First pair of feet 
with chele large, compressed, crested above, with inner concave 
side excised at the outer margin of shell. Remaining eight feet 
with last joint styliform. 
Sp. Calappa granulata Fasr., Cancer granulatus L, (excl. Synon.), HERBST 
Krabben 1. Tab. 12, figs. 75, 76, Cuv. R. Ant., éd. all., Crust. Pl. 38, fig. 1, 
from the Mediterranean ;—Calappa tuberculata Fasr., DESMAR. Crust. 
Pl. ro, fig. 1 ; Red Sea, Indian Ocean, &c. 
Note.—Add sub-genus Camara Dr Haan. Sp. Calappa fornicata, 
Cancer calappa L. 
+t Area of mouth quadrate, anteriorly remote from the margin 
of shell. Mawxilliform feet broad. 
Family XXXIII. Majacea De Haan, Oxyrhyncha Epw. 
Space between the origin of middle antenne and the area of mouth 
large, scarcely broader than long. Shell triangular or subovate, 
anteriorly narrowed, mostly running into a frontal rostrum. Feet 
mostly elongate, never natatory. 
Inachus F apr. (in part). Feet slender, very long, elongate ; 
second pair very often longer than first. Third joint of maxilliform 
feet obtrigonal or obovate, sustaining the fourth on its apex. 
Leptopodia Leacu. Rostrum very long. Peduncle of eyes 
short. 
