STALK-EYED CRUSTACEA 267 



beyond the orbit. No notch below external orbital 

 angle. 



Larger hand very short, broad, and a little spinose 

 above; its palm broader than long. The fingers of the 

 smaller hand lamellate, and very broad at their extrem- 

 ities. Walking legs roughened above. 



Range. — East Indies, Brazil, Tahiti. 



2. Ocypoda arenaria. 



Ocypoda arciiaria . . . Say, Milne Edwards, Miers, 



Kingsley, Dekay, Gibbes, 

 Gerstacker, Von Martens, 

 Smith. 



Ocypoda albicans . . . Latreille, Bosc. 



Ocypoda yJioinbea . . . Milne Edwards, Dana, Gibbes, 



Heller, Smith. 



Cancer arenariiis . . . Catesby 



Cancer quadratus \ 

 Ocypoda quadrata) 

 Monolepis inerniis . . Say 



Fabricius. 



Carapace convex, granulate above, front but little 

 deflexed ; lateral angles of carapace acute, extending as 

 far forward as the middle of the front. Lateral margin 

 crenulate, arcuate, the carapace being widest at the 

 anterior third. Orbits below with spiniform tubercles ; 

 and occasionally a distinct emargination. Eyes with the 

 extremities rounded and not reaching to the extremity of 

 the orbit. First pair of legs with spines and tubercles ; 

 the fourth joint with the upper and lower margins spined, 

 the posterior rounded and crossed by tubercular rugae. 

 Fifth joint with the tubercles obsolete above but pro- 

 nounced near the margins, the inner margin armed with 

 one or more strong spiniform teeth. Hands tuberculate, 



