i84 STALK-EYED CRUSTACEA 



Subgenus Hellenus. 



Hellenus (subgenus) . . Miers. 



Hellenus A. Milne Edwards. 



The spine on the inner margin of the fifth joint of the 

 first pair of legs abnormally developed, in the adult male 

 exceeding the palm in length. 



10. Neptunus (Hellenus) spinicarpus. 



Neptunus {Hellenus) spinicarpus . Stimpson, A. Milne 



Edwards. 

 Achelous spinicarpus Stimpson. 



The carapace is a little wide, slightly downy, with its 

 surface irregular. The antero-Iateral borders form a 

 curve with a short radius ; they are cut into very sharp 

 and fine teeth. The lateral spine is long, but thin. The 

 front is slightly advanced ; its teeth are small, sharp, and 

 triangular, the middle ones slightly exceeding the lateral. 

 The postero-lateral angles are well marked, but are not 

 raised up into a tooth or spine. 



The first pair of legs long and weak. The fourth joint 

 has in front four large spines ; there is another spine at 

 the extremity of the posterior border. The fifth joint has 

 at its internal angle a long spine, its point reaching the 

 anterior third of the hand. The hand has two small 

 spines. The last pair of legs is large and strong ; their 

 fourth joint has no inferior teeth. The sternal plastron 

 is finely granular ; the abdomen is smooth. 



Range. — Barbados, Grenada, St. Kitts, Santa Cruz, 

 Brazil ; in deep water. 



