Boone, Crustacea, Cruises of "Eagle" and "Ara," 1921-28 93 



Palinurus americana Stone, in Heilprin, The Bermuda Islands, p. 

 149.— Gruvel, Compt. Rend. Acad. Sei., vol. 152, 1911, p. 1351.— 

 E. L. BouviER, Mem. Mus. Comp. Zool., vol. 48, No. 5, p. 441, 1925. 



PaniUirus guttatus (Latreille). 



Plate 26. 



Type : The type was from the Antilles and is deposited in the Paris 

 Museum. 



Distribution : Littoral in the West Indian region. Less abundant 

 in Florida and the upper West Indies than P. argus, but present in 

 sufficient numbers to be of economic importance. Rather rare in 

 Brazilian waters. 



Color : The animal is a deep coppery brown, shaded with olivaceous 

 green and irregularly maculated with round, creamy spots of varying 

 sizes, the similarity of its markings to that of the barnj^ard "Guinea 

 hen ' ' giving rise to the common name ' ' Guinea lobster. ' ' 



Material examined : One very large specimen taken in trap, at 

 Miami, Florida, 1923, by the ''Ara." 



Technical descripiton : Animal large, commonly weighing from 

 one to two pounds; exceptional records exist of specimens weighing 

 ten pounds or more. 



Carapace about as long as the abdominal segments exclusive of the 

 caudal fan. Cervical groove deep ; dorsal surface of carapace cov- 

 ered with sharp spines, the larger of which are arranged in about 

 eight more or less regular longitudinal rows ; the spaces between the 

 major spines are almost entirely paved with lesser spines which are 

 broad basally and margined anteriorly with a ring of fine setae; all 

 the spines are forward-directed, acute- tipped. Above and projecting 

 over the eye are a pair of long, curved, laterally compressed, acumi- 

 nate, frontal horns. Just behind and in line with each of these is a 

 row of three spines on each side anterior to the cervical suture and a 

 row of five spines posterior to the cervical suture. These spines de- 

 crease in size posteriorly. There is a strong, laterally compressed spine 

 at the postorbital angle, and another at the outer antennal angle. A 

 distinct curved carina extends along the frontal border from the pre- 

 orbital to the antennal spine. The posterior margin of the carapace 

 is margined by a raised, smooth carina, anterior to which there is a 

 smooth groove. The extreme hinder margin of the carina is setose. 

 The lateral plates of the carapace are closely fused. The abdominal 



