na 
70 STALK- AND SESSILE-EYED CRUSTACEA 
Carapace usually deep and laterally compressed, with two longitu- 
dinal, and usually a dorsal suture. Scale of the external antenne 
small or obsolete. Anterior legs largely developed, usually laterally 
compressed, and adapted to burrowing. The integument of the body 
is almost membranaceous in texture. 
Family I. GEBIIDZ. 
Gebide, Dana, U.S. Explor. Exped. xii, Crust. part 1, p. 508, 
(1852). 
External maxillipeds pediform. Caudal and other abdominal 
appendages broad. 
GEBIA. 
Gebia, Leach, Trans. Linn. Soe. xi, p. 342, (1815); M. Edw. Hist. 
Nat. Crust. ii, p. 312, (1837); Dana, U.S. Explor. Exped. xii, Crust. 
part i, p. 509, (1852). 
Carapace with a short triangular rostrum. Internal antenne very 
short ; external antenne slender, without any basal scale. External 
maxillipeds pediform. Anterior legs with the hand elongate, com- 
pressed, imperfectly subchelate, the upper mobile finger closing against 
a rudimentary inferior immobile finger. Ambulatory legs monodactyle, 
first pair somewhat expanded and compressed, tarsus styliform. Abdo- 
men long, and expanded posteriorly, without branchial appendages, 
caudal appendages broad. 
76. Gebia danai. 
Gebia hirtifrons, Dana, U.S. Explor. Exped. xii, Crust. part i, 
p- 511, pl. xxxu, fig. 2, (1852), nee White. 
Gebia danai, Miers, Ann. Mag. Nat. Hist. (ser. 4) xvii, p. 223, 
(1876). 
Scabrous surface of front part of carapace not reaching more than 
half way to dorsal suture, and the points mostly in six nearly longi- 
tudinal lines. Hand with the outer surface smooth, no spmules or 
denticulations, and few hairs on the upper margin ; on lower margin 
small denticulations, and rather hairy ; lower finger slender, and some- 
what incurved; caudal segment not broader than long. Flagella of 
inner antenne a little shorter than the last joint of base. Outer antenne 
