140 Proceedings of the Biological Society of Washington. 



creamy buff, the convex ridge below the orbital spines is yellow anteriorly 

 shading into deep orange posteriorly. 



The antennal peduncle is maroon mottled sparsely with creamy buff. 

 The spines have the basal half deeper maroon than elsewhere, ringed 

 medially with cream, the distal half green. The flagellum is lighter purple 

 streaked ventrally and dorsally with a median longitudinal darker line. 



The antennules are maroon with a creamy buff mottling at the distal end 

 of each peduncular joint. 



The legs have the first four joints maroon with a slight greenish cast, 

 longitudinally striated with narrow creamy lines slightly tinted with ochre, 

 the fifth and sixth joints are a rich moss green longitudinally striated with 

 narrow creamy lines. 



The first abdominal somite has the anterior part green mottled with 

 whitish dots, the posterior part maroon, finely punctate, the second to 

 fifth somites inclusive are maroon in the median area, shading into deeper 

 maroon posteriorly, the lateral parts are green, the entire surface is finely 

 punctate; a row of minute white dots parallel the posterior of each somite. 

 The sides of the somites are maroon-greenish; there is an enlarged white 

 spot on the median lateral region at the terminal of the epimeral groove, 

 below these are many spots of creamy buff including the tips of the segments. 

 The telson has the basal part to the anterior third of the caudal fan green 

 spotted with creamy buff; the posterior third of the fan is a similar green, 

 the interspace being lighter green, the caudal fan is margined with bright 

 yellow. All the pleopoda are green dotted with a few creamy spots and 

 bordered with a bright yellow margin. 



Seven specimens and three cast shells are in the collections of the Bio- 

 logical Laboratory of the Miami Aquarium Association and were captured 

 in the vicinity of Biscay ne Bay, Florida. In size the Panulirus laevicauda 

 (Latreille) taken in Florida waters average about the same as the Panulirus 

 argus. 



