20 /S. J. SmitJi on Brazilian Crustacea. 



reddish ; carapax with the frontal and median tubercles, the tubercles 

 of the orbits and of the anterior and lateral margins orange-red ; first 

 segment of the abdomen bright orange, the median portion slightly 

 mottled with purplish-red, and with two large circular reddish-purple 

 spots ; the succeeding segments with the smooth anterior portion, 

 orange mottled with purplish-red ; terminal segment and the lamelli- 

 form appendages of the penultimate segment brownish-yellow, almost 

 white at the extremities. Beneath, dirty yellowish; antennas with 

 the colors of the upper side dimly repeated ; legs with slight purple 

 annulations at the articulations. 



Length of body from tip of rostrum to extremity of abdomen, - lOO-O™^^ 



" of carapax from tip of rostrum to middle of jDOsterior margin, 86'0 

 Breadth of carapax, - - - - - - - 71-2 



Lengtli of antennula3, below, - - - - - 55-0 



" antennae, '• ..... 52-0 



'' first thoracic legs, - - - - - 76-0 



" second " - - - - - 92-0 



" third " ..... 83-5 



" fourth " ..... 72-0 



fifth " 75-0 



Panulirus echinatns, sp. nov. 



This species is closely allied to P. guttatus. 



The carapax is armed with numerous stout spines, those on the 

 anterior part of the carapax larger than those behind; the surface 

 between the spines is closely filled with small tubercles, which are 

 beset with short, stifi^ hairs, and many of the tubercles in front of the 

 cervical suture are tipped with spinules. The cervical suture is mark- 

 ed by a deep depression. 



The antennulary segment is armed with two straight and slender 

 spines which project forward and upward, their length twice as great 

 as the distance between their tips. The superior orbital spines are 

 stout and long, and extend slightly beyond the tips of the eyes. On 

 the anterior border below the eye, there are two other spines project- 

 ing over the base of the antennae ; from the inner of these there is a 

 line of about eleven smaller spines, three of which are in front of the 

 cervical suture, extending to the postero-lateral angle of the carapax ; 

 below this line there are no spines on the branchial region. Just 

 behind each of the superior orbital spines there is a stout spine as large 

 as the spines on the anterior margin below the eye ; behind these 

 spines, and in front of the cervical suture, there are four smaller spines, 

 thus forming, with the orbital spines, two-subdorsal lines of four 

 spines each, which are succeeded behind the cervical suture, by two 



