* 
OF NEW ZEALAND. 37 
nearly horizontal, rather concave, and not occupying half the length of 
the carapace. Epistome very short, with transverse crests. Hands 
very robust, smooth externally, with a few small scattered tubercles 
above. Colour red, alternating with yellow. Length 1? in. ; breadth 
2.in. (M. E.). 
New Zealand (Coll. Brit. Mus.). 
This species is found upon the Australian and Chilian Coasts, and 
at Norfolk Island. 
HETEROGRAPSUS. 
Pseudograpsus, M. Edw. (part) Hist. Nat. Crust. 1, p. 81, (1837); 
Dana, U.S, Explor. Exped. xiii, Crust. part i, p. 334, (1852). 
Hemigrapsus, Dana, U.S. Explor. Exped. Crust. part 1, p. 348, 
(1852). 
Heterograpsus, Lucas, Explor. Algérie, Crust. p. 18, (1849) ; Dana, 
U.S. Explor, Exped. xii, Crust. part i, p. 332, (1852). 
Carapace slightly convex and lobate in front, sides shghtly arcuate 
anteriorly, three toothed. Front straight or slghtly simuous. 
External maxillipeds when closed, meeting or nearly meeting along 
their inner margins. Ambulatory legs usually robust, and slightly 
compressed, Tarsi not spinulous. Abdomen seven-jointed in both 
sexes. 
38. Heterograpsus sexdentatus. 
Cyclograpsus sexdentatus, M. Edw. Hist. Nat. Crust. 1, p. 79, 
(1837); White, Dieffenb. New Zealand ui, p. 266, (1843). 
Hemigrapsus sexdentatus, Dana, U.S. Explor. Exped. xiii, Crust. 
part i, p. 348, pl. xxii, fie. 2, (1852). 
Heterograpsus sexdentatus, M. Edw. Ann. Sci. Nat. xx, p. 192, 
(1853). 
Gastric region uneven. Front straight. Lateral margins of the 
carapace granulous, and divided on each side into three teeth, of which 
the two first are very broad. Orbits directed forward. External 
orbital hiatus slightly defined. Legs slender, tarsi thick and short. 
Length 1} in. ; breadth 12 in. (M. E.). 
New Zealand (Coll. Mus. Paris; Brit.); Bay of Islands (Dana). 
The specimens referred to this species by Dana, are of a dark brown 
or black, clouded with grey or dirty white on the back. Legs black, 
clouded or banded with dirty white. It seems to be a very common 
species in New Zealand. 
