70 



BULLETIN 54, UNITED STATES NATIONAL MUSEUM. 



" Last peraeopods having the propodus 

 half as long again as the carpus, and the 

 dact3 T los subequal to the carpus; carpus 

 and propodus each furnished with two 

 forked spines on their anterior margin. 



"First pleopods large, covering the 

 whole of the remaining pleopods, against 

 which they are closely pressed. 



"Uropods with outer and upper plates 

 wide apart dorsally, broadly triangular or 

 spear-shaped, longer than wide, and as 

 long or nearly as long as the inner plate, 

 which is very similar in form but narrower, 

 with well-rounded extremities; both are 

 tipped with a few setae, which are, how- 

 ever, very easily abraded. 



"Telson much depressed, broadly lance- 

 olate, apex rather acute, about equal in 

 length to the uropods. 



''Length, 9 mm., or about three-six- 

 teenths of an inch." NORMAN and STEB- 



FIG. 55. ANTHELURA AFFINIS. a, 

 SIXTH PERIOPOD. b, SECOND GNATH- 

 OPOD. c, FIRST GNATHOPOD. d, 

 GENERAL FIGURE. 



ANTHELURA AFFINIS Richardson. 



Anthelura affinis RICHARDSON, Trans. Conn. 

 Acad. Sciences, XI, 1902, pp. 288-289, 

 pi. xxxviu, figs. 29-32. 



Locality. Bermudas. 



Body narrow, elongate. Head with 

 small median point. Eyes distinct, situ- 

 ated in antero-lateral angulations. 



Antennae of both pairs with flagella con- 

 sisting of several joints, and fringed with 

 long hairs at the tip. Maxillipeds con- 

 sist of five joints. 



First three thoracic segments about 

 equal in length. Three following seg- 

 ments somewhat longer, and subequal. 

 Seventh segment fully half the length of 

 preceding segment. 



All the segments of the abdomen dis- 

 tinctly defined. Terminal segment nar- 

 rowly linguiform, roundly triangulate at 

 the apex and with smooth margins. 



Outer superior branch of uropoda long, 

 oval, reaching quite to the extremity of 



"Trans. Zool. Soc. Lond.. XII, 1886, Pt. 4, pp. 127-128. 



