28o STALK-EYED CRUSTACEA 



with their fourth joint dilated and compressed; terminal 

 joint spiny. The abdomen of the male is seven-jointed. 

 Range. — Atlantic and Pacific Oceans. 



I. Grapsus maculatus. 



Grapsns Diacidatiis . . H. Milne Edwards, Miers, 



Kingsley. 



Grapsus pictus .... LatreiHe, Milne Edwards. 



Grapsus strigosus . . . Brulle. 



Grapsus altifrons . . . Stimpson. 

 Grapsus ivebbi \ 



Grapsus ornatus , . . Milne Edwards. 



Grapsus pha?-aonis] 



Cancer grapsus . . . Linne. 



Pagurus maculatus . . Catesb}'. 



Carapace transversely plicated, folds anteriorly broken 

 up into flat tubercles. Frontal crest four-lobed, the 

 median lobes the largest, their margins subtuberculate. 

 Frontal margins crenulate, regularly bowed. Inferior 

 border of orbit with a deep fissure. Anterior border of 

 third and fourth joint of first pair of legs spinose ; the 

 posterior surface of fourth joint plicate. Fifth joint with 

 distinct tubercles, its interior margin with a laminate spine. 

 Hand above tuberculate, externally with longitudinal 

 ridges below with oblique folds. On the inner surface the 

 tubercles and folds are less prominent. Fingers short. 



Range. — West Indies (Barbados), Bermuda, Florida, 

 Georgia, California, San Lorenzo, Pernambuco, Central 

 America, West Coast of Mexico, Honduras, Peru, Tahiti, 

 New Zealand, Mauritius, Natal, St. Helena, Cape Verde 

 Islands. 



Very common on the rocks at Barbados. 



