ESTERLY. — CALANOID COPEPODA FROM THE BERMUDA ISLANDS. 221 



Table I, which follows, shows the number of bristles or thorns on the 

 joints of the rami of the first four pairs of feet. The abbreviations are 

 as follows : Se., a bristle or thorn on the outer margin ; JSi, a similar 

 structure on the inner margin of any joint ; St., a bristle on the distal 

 end of a terminal joint. 



TABLE I. 



The fifth pair of feet shows most marked peculiarities. These feet 

 are symmetrical in the male. Each inner ramus is 1 -jointed, that of 

 the right foot being club-shaped (Plate 3, Figure 30), that of the left 

 foot (Plate 3, Figure 34) shorter and broader. The outer ramus of the 

 right foot is 2-jointed, that of the left foot 3-jointed with the terminal 

 joint peculiarly modified (Plate 3, Figure 3t). It is split up into three 

 or four parts, or slender processes, one of which branches and carries a 

 very delicate lamellar structure that ends distally in fine hair-like 

 divisions. The figure gives a better idea of the structure of this foot 

 than is possible in a description. The end joint of the outer ramus of 

 the left foot is of the same structure in all the specimens I have 

 examined. 



The right and left fifth feet of the female are symmetrical ; the inner 

 ramus is 2-jointed, the outer 3-jointed (Plate 3, Figure 29). A pecul- 

 iarity is the attachment of the terminal joint of the outer ramus at 

 the middle of the inner margin of the second joint. 



The average length of the males is 1.05 mm., of the females 1 mm. 



The color of both sexes is brownish buff; the pigment is generally 

 distributed through the body and appendages. 



