DECAPOD CRUSTACEANS OF THE WEST INDIES 



135 



Ecological n oth^s. —Callinectes sapidus has been collected from 

 only two streams on Dominica, the Layou and Salisbury Rivers, 

 and a single large individual was observed in the Lamoins River 

 south of Portsmouth. Observations, therefore, on its habits on 

 Dominica are so limited as to be worthy of Httle note. 



Figure 37. — Male first pleopods in flexed position in sternal groove and enlarged tips of 

 left first pleopods in posterior view: a, Callincctes bocourti, specimen shown in figure 35; 



b, C. danae (carapace length 48.2 mm) from Cayo Punta Colorado, Cuba (Tomas Barrera); 



c, C. exasperatus (cl 51.0 mm) from Jamaica {Albatross); d, C. marginatus (cl 47.0 mm) 

 from Montego Bay, Jamaica (E. A. Andrews); e, C. ornatus (cl 54.0 mm) from Tarpum 

 Bay, Eleuthera (B. A. Bean);/, C. sapidus, specimen shown in figure 36. 



