320 STALK-EYED CRUSTACEA 



3. Persephona lamarckii. 



Persephona lauiarckii . . H. Milne Edwards, Leach, 



Desmarest. 



Anterior part of the carapace ahnost angular, with 

 scattered granules ; three equal curved spines on the 

 posterior border. Fourth joint of first pair of legs 

 granular. 



Range. — West Indian Sea. 



4. Persephona lichtenstenii. 



PevsepJioua licJitenstenii . H. Milne Edwards, Leach, 



Desmarest. 



Carapace flat, covered with scattered granulations ; 

 armed with a tubercle at each lateral angle, and with 

 three slightly curved spines, of which the middle one 

 is the longest, upon the external border. 



Range. — West Indian Sea. 



Family IV. Dorippidae. 



Dorippidce .... Dana, Miers. 

 Dorippiens . . . . H. Milne Edwards. 



The afferent channels to the branchiae open (normally) 

 behind the pterygostomian region and in front of the 

 first pair of legs; the fifth and following joints of the 

 external maxillipedes are not concealed by the fourth 

 joint. The two to four posterior legs are short and 

 feeble, and are raised on the dorsal surface of the 

 carapace. The sexual appendages in the male are 

 exserted from the sternum. 



