42 STALK- AND SESSILE-EYED CRUSTACEA 
externally, and is probably only a variety of C. lavauxi. Both 
species inhabit New Zealand. 
Cyclograpsus lavauxi differs from C. punctatus, M. Edw. and C. 
levis, Hess. in the marbled colours of the carapace, and from 
C. cinereus, Dana, in the wider triangular abdomen of the male. 
CHASMAGNATHUS. 
Chasmagnathus, De Haan, Faun. Japon. Crust. p. 27, (1885). 
Cyclograpsus, M. Edw. (part) Hist. Nat. Crust. i, p. 77, (18387). 
Carapace very thick, convex, sub-quadrate, with the sides toothed, very 
slightly arcuate anteriorly, and the front curving regularly downward. 
External maxillipeds leaving a wide lozenge-shaped space when closed, 
the third joint truncate or slightly excavate above. Eyes very short. 
Anterior legs smooth, with the hands enlarged in the male. Am- 
bulatory legs slightly compressed. 
45. Chasmagnathus subquadratus. \ 
A 
Chasmagnathus subquadratus, Dana, U.S. Explor. Exped. xin, Crust. 
part i, p. 363, pl. xiu, fig. 5, (1852). 
Carapace convex, smooth, somewhat punctate posteriorly ; front 
and antero-lateral margins as in C. levis. | Antero-lateral margin with 
two incisions, sides but slightly arcuate, premedial areolet hardly 
distinct before or elsewhere. Posterior part of outer maxillipeds and 
adjoining part of sternum very short hirgute. Feet nearly as in C, 
levis. Hand not granulate, minute punctate. Pterygostomian region 
very short reticulate. Fifth joint of second feet tomentose above 
and on anterior surface, but not below. Abdomen broader than usual 
at base and longer ciliate, sides excavate. (D.). 
New Zealand? New South Wales? (Dana). 
The outer manillipeds, and the surface of, the sternum between the 
buccal area and apex of the abdomen, is more hairy than in C. levis. 
I have seen no specimens of this species, but I doubt if it be distinct 
from C. levis. 
46. Chasmagnathus levis. 
Chasmagnathus levis, Dana, U.S. Explor. Exped. xii, Crust. part i, 
p. 366, pl. xxi, fig. 7, (1852). 
Wieaat 
‘i 
