460 STALK-EYED CRUSTACEA 



3. Glyphocrangon aculeata. 



GlypJiocraiigon aculeata . A. Milne Edwards, Spence 



Bate. 



The rostrum is straight Hke G. 7iobilis, but the carapace 

 is wider in front, where it terminates on each side in a very 

 strong spine directed a httle outwards and forwards ; 

 another smaller spine limits the orbital cavity, and there is 

 another outside the articulation of the external antennae. 

 The lateral border has also a spine behind^ the cervical 

 groove. The carapace has above four toothed keels ; the 

 space between them is smooth. The two lateral keels are 

 smooth. 



The abdomen is more strongly carinated in the middle 

 line than the other, and it is very sculptured. 



Range. — St. Vincent; in deep water. 



Family II. Alpheidae. 

 AlpJicidcc .... Spence Bate. 

 Rostrum short or wanting. Eyes short and covered 

 by the carapace. The mandible has a cutting edge and a 

 two-jointed palp. The first pair of legs asymmetrical, on 

 one side having the fifth joint short and the hand large 

 and normal in form, and on the other side a hand very 

 large and of irregular shape. The hand of the second 

 pair is very small. The terminal segment of the abdomen 

 is broad and rounded. 



I. Alpheus. 



Alp]icus . . H. Milne Edwards, Fabricius, Risso, 



Spence Bate, Miers. 

 AlpJuvus . . Desmarest. 



The body is dorsally rounded and laterally compressed. 

 The eyes are small, and are covered by the carapace, 



