STALK-EYED CRUSTACEA 105 



There are two prominent teeth upon the external 

 orbital border, and a minute spine at the summit of the 

 eye. The first pair of legs is long and slender ; upper 

 surface minutely scabrous, and with an irregular row of 

 teeth-like tubercles which is median upon the arm and 

 forearm, but approaches the outer margin of the hand. 

 The edge of the fourth and fifth joint has small irregular 

 teeth. The superior edge of the hand has nineteen teeth, 

 at first increasing in size then diminishing. On the outer 

 edge of the hand there are four to five large and about 

 eleven small teeth, alternating by threes with the larger 

 ones. Fingers are white, and not much bent downwards. 

 The walking legs are long, thin, naked, unarmed or 

 having only obscure indications of teeth on their fourth 

 joint. 



On the sternum near the base of the first pair of legs 

 there is a conical tubercle on each side. Tooth of basal 

 joint of first pair acutely triangular. On the second 

 joint of abdomen there is a transverse crest, with a 

 tooth on each side ; on the last joint but one there is 

 a crest. 



Range. — West Indies, Florida. 



3. Lambrus (Lambrus) serratus. 



Lavibrns sermtns .... IT. Milne Edwards. 



Lambrus crenulat?is . . . Saussure, Stimpson. 



Platylambrjis crejuilatus . Desbonne and Schramm. 



Platylainbriis serraius . . A. Milne Edwards. 



Lambrus lupoidcs .... White. 



Cancer macrochelos .... Seba. 



Carapace wide, depressed, and rough ; antero-lateral 

 edges armed with eiGjht or nine trians^ular teeth, of 



