r86 



STALK-EYED CRUSTACEA 



I. Callinectes diacanthus. 



Callincctes diacanthus 



Calli)iectcs liastatus 

 Callincctes ornatns 

 Callincctes larvatus 

 Calli}iectes tumidus 

 Callinectes toxotes 

 Callincctes robiistiis 

 Callinectes bellicosus 

 Callinectes arcuatus 

 Calliiicctes pleicriticus 

 Callincctes nit id us 

 Callinectes dance . 

 Po7'tumcs diacafithiis 

 Lupa Jiastata . 

 Lnpa diacaiit/ia . 



Lupa parvida . . 

 Neptmnis diacanthus 



Stimpson, Ordway A. Milne 

 Edwards. 



) Ordway 



S. Smith. 



Latreille. 



Say. 



H. Milne Edwards, Dekay, 



Dana, Saussure, Desbonne 



and Schramm. 

 Desbonne and Schramm. 

 A. Milne Edwards. 



The carapace is more than twice as wide as long, and 

 is marked with some transverse granular lines. The front 

 is cut into four teeth, not counting the internal orbital 

 angle ; the two central teeth are smaller than the two 

 lateral, and are sometimes only a trace or as large. The 

 superior orbital border is without spiniform prolongation. 

 The last tooth of the antero-lateral border is the largest 

 of the lateral teeth. It may be small or large. 



The first pair of legs large. The fourth joint has three 

 large spines upon the anterior border, and one sharp 

 spine at the extremity of the posterior border. The fifth 



