44 STALK- AND SESSILE-EYED CRUSTACEA 
The colour (in dried specimens) is brown, with lighter patches. 
Dana found this species at Hlawarra, New South Wales. 
48. Helice lucasi. 
Felice lucasi, M. Edw. Ann. Sci. Nat. xx, p. 190, (1853). 
Very near Helice latreillii (Cyclograpsus latreillii, M. Edw. Hist. 
Nat. Crust. ii, p. 80, 1837), but the third joint of the external maxilli- 
peds is shorter, there is no fourth marginal tooth, and there exists a 
small longitudinal crest on the lower third of the external surface of 
the hand. (M. E.). 
New Zealand (M. Edw.). 
I have seen no specimens of this species. 
SESARMA. 
Sesarma, Say, Journ. Acad. Nat. Sci. Philad. 1, p. 76, (1817); 
M. Edw. Hist. Nat. Crust. ii, p. 71, (18387); Dana, U.S. Explor. 
Exped. xii, Crust. part i, p. 333, (1852). 
Pachysoma, De Haan, Faun. Japon. Crust. p. 33, (1835). 
Carapace quadrate, often transversely lineolate, the lateral margins 
toothed or entite. Front abruptly vertically deflexed, usually more 
than half the breadth of the carapace, and divided above into several 
lobes by longitudinal grooves in the front part of the carapace. 
Pterygostomian regions reticulated. External mavxillipeds with the 
third joint longer than broad, more or less rounded at the summit. 
Ambulatory legs ciliate, with the tarsi unarmed. 
49. Sesarma pentagona. 
Sesarma pentagona, Hutton, Trans. New Zeal. Inst. p. 279, (1875). 
Carapace subquadrate, smooth, broader than long; anterior lateral 
margin with two teeth; front nearly vertical, with four rounded pro- 
jections; lateral regions obliquely striated, a pentagonal mark in the 
centre, the apex prolonged to the front, which it divides. Area on 
each side of the mouth below with moniliform transverse striae. Arms 
trigonal, striated on the outside, hands smooth outside, and with a few 
scattered granules inside; fingers smooth. Legs with the third joint 
very broad, compressed, acute above, and armed with a single tooth at 
