GAMMARIDEA. 879 



very broad, being much compressed, setse very short, on fifth joint 

 about as long as semidiameter of the joint. 



Plate 59, 1ig. 6 a, animal, enlarged ; b, mandible ; c, inner maxilla ; 

 d, second pair; e, maxillipeds ; /, part of flagellum of inferior antennse; 

 g, hand of first pair of legs ; h, hand of second pair ; i, leg of seventh 

 pair; k, stylet of first pair; I, stylet of last pair; m, side view of ex- 

 tremity of abdomen. 



Sea-shores of Illawarra, New South Wales. 



Length, six to seven lines. The head is but little longer than the 

 first thoracic segment. The flagellum of the superior antennse is 

 nearly half the whole length. The hand of the second pair of feet 

 has the apex slightly prominent, and the palm below is a little 

 sinuous, the claw or finger not fitting tightly to it when closed ; the 

 hand is naked, except a few extremely minute hairs on the margin 

 against which the finger shuts. The broad compressed third and 

 fourth joints of the last pair of legs are peculiar ; the next joint is 

 slender as usual. 



This species is near the 0. littorea of Europe. 



0. dispar, Dana, Proc. Amer. Acad. Sci., Boston, ii. 204. 



Orchestia qtjadrimana. 



Maris : — Epimeros sat magnce, 6tce 4:tis breviores. Antenna? 2dce dimidio 

 corporis paulo breviores, bene setulosce, basi brevi; fiagello parce lon- 

 giore quam basis, articidis >)wn oblongis, cylmdricis, setis verticillatis, 

 diametro articidorum fere duplo longioribus. Antenna? Imce basi 

 2darum fere dimidio breviores. Pedes Imi parvuli, manufere trian- 

 gulatd, apice latiore, truncatd, paululo excavatd. Pedes 2di validi, 

 manu subquadratd, paulo oblongd, palmd apicali, transversa, paulo 

 excavatd. Pedes otii 4:ti debiles subcequi; bti Qti Imi similes, sensim 

 increscentes, valde inosqui (7 mis duplo longioribus quam bti), bene 

 setulosi, setis articuli bti numerosis longioribus quam diametrum ar- 

 ticuli. 



Male : — Epimerals rather broad, fifth shorter than fourth. Inferior 



