8o STALK-EYED CRUSTACEA 



I. Othonia aculeata. 



Othonia aculeata . . . Stimpson, A. Milne Edwards. 



Othotiia sexdentata . . White. 



Othonia anisodon . . Von Martens. 



Hj/as aadeata . . . Gibbes. 



The carapace is longer than wide, almost smooth in 

 adults, more or less tubercular and granular in the young. 

 The praeocular angle and the external ocular angle is 

 sharp. The antero- lateral border has about five teeth, 

 not counting the external ocular tooth, more or less 

 triangular, the first and the third often joined at their 

 base ; they are sharp and short in the young ; they are 

 wide and blunted in older specimens. The front is 

 formed of two small, flat, and triangular teeth. The basal 

 joint of external antennae is wide ; the part of its anterior 

 border outside the insertion of the second joint is toothed. 

 The first pair of legs of the male is always weak. The 

 arm has behind about three small tubercles ; the fingers 

 of the pincers are in contact in the greater part of their 

 extent when closed ; they have only a small space at their 

 base. 



Range. — St. Thomas, Cuba, Florida, 



2. Othonia Iherminieri. 



OtJionia Iherminieri .... A. Milne Edwards, 



Schramm. 

 MicrorJiy^icJius Iherminieri . . Desbonne. 



The carapace longer than broad ; the front is not 

 much advanced ; the orbital angles are obtuse. The 

 antero-lateral edge is armed with large blunt teeth ; the 

 two last are small and inclined to disappear. The basal 



