4i6 STALK-EYED CRUSTACEA 



is retracted at its base, widened in the centre, and ter- 

 minates in a long spine. Tiie eye-peduncles are slightly 

 dilated at the base ; they reach the terminal joint of the 

 antennal peduncles and end in a reduced corneal surface. 

 The first pair of legs are long and slender ; there are a few 

 spinules on the distal end of fourth and fifth joint ; fourth 

 joint has a few spines on inner border. Walking legs thin ; 

 a spinule on distal end of fourth joint ; terminal joint 

 large, with horny spines on posterior margin. Abdomen 

 has an elevated keel on second and third segment. 

 Range. — West Indian Sea. 



4. Elasmonotus longimanus. 



Elasmonotus longiinamis . A. Milne Edwards, A. 



Milne Edwards and 

 Bouvier. 



The carapace is a little wider in front than behind ; its 

 lateral borders are almost parallel. The rostrum is wide, 

 very obtuse at its extremity, slightly depressed dorsally, 

 especially posteriorly ; it partly hides the eyes. The eye- 

 peduncles are compressed and retracted at the base, 

 rounded distally. The corneal surface is large. The 

 first pair of legs long and strong ; the fingers of the 

 pincers of the male project slightly at their base ; their 

 edges are finely and regularly toothed. The fourth and 

 fifth joint are granular. The walking legs are short and 

 feeble ; the superior border of the fourth joint is trenchant. 

 The fifth joint has a toothed border or two longitudinal 

 ridges. All the joints are granular. 



The second, third, and fourth abdominal segment are 

 carinated, and the middle portion is raised up to form a 

 strong, compressed tooth, curved in front. 



Range. — St. Lucia, Martinique, Dominica. 



