A S T A C 1 D E A. 



FAMILY PALINURID^E. 



THE Palinuridjs of our present seas have been divided into two 

 sections or subgenera of a single genus Palinurus, by Edwards and 

 De Haan, being called Palinuri communes and P. longicornes, and 

 into two genera by Gray. The species of these sections differ much 

 in aspect; and their distinguishing characters are believed by us, 

 sufficient to authorize the adoption of Gray's genera. 



Still a third genus, which he names Linuparus, is proposed by 

 Gray, for the Palinurus trie/onus, De Haan, and the allied species. 

 These belong to the first section, and to the genus Paliuurus, as 

 adopted. 



G. 1. PALINURUS, Fair. Carapax vix rostratus. Annulus auteunalis supra 



august issi in us, curvatus. AntennaB externze basi fere contiguaa. Antenna; in- 



ternss flagellis breves. 

 G. 2. PANULIRUS, Gray. Carapax non rostratus. . Annulus anteunalis supra 



latus, subquadratus et horizontalis. Antennre externse basi remolae. Antennas 



internte fljgellis lougee. 



PALINURUS LALANDII, Lamk. 

 Cape of Good Hope. 



PANULIRUS SPIKOSUS (Edio.}, Gray. 

 Pacific Islands. 



PANULIRUS PENICILLATUS (Olivier), Gray. 

 Pacific Islands. 



