372 



BULLETIN" 15 8, UNITED STATES NATIONAL MUSEUM 



of the urosome and the posterior portion of the thoracic segments 

 are bluish green, deepened in places almost to black (Kathbun). 



Female. — Head wider than long, widest at the posterior margin; 

 corneal lenses a little behind the frontal margin and in contact with 

 each other; first segment narrower than the head; second segment 

 wider than the first ; third segment abruptly narrowed to two-thirds 

 the width of the second segment ; fourth segment as wide as the third ; 

 fifth segment less than half the width of the fourth; caudal rami 

 twice as long as wide. Fourth endopod only half as long as exopod, 

 its two apical setae equal. Total length, 8-3.35 mm. 



Figure 227. 



-Sapphirina scarlata: a. Female, dorsal ; h, female, 

 second antenna ; c, female, fourth leg 



Male. — Head nearly twice as wide as long ; corneal lenses separated 

 on the frontal margin ; body behind the head regularly tapered, the 

 lateral margins much smoother than in the female. Terminal seg- 

 ment of the second endopod with two lanceolate flanged spines, a 

 denticulate awl-shaped spine and three small processes around the 

 apex. Total length, 3.^3.8 mm. 



Remarks. — The broken lateral margins in the female, on account 

 of the varying widths of the body segments, are characteristic, as 

 also is the shortened fourth endopod. This is the first record of the 

 species from this side of the Atlantic, and like the preceding species 

 it comes from the Tropics by way of the Gulf Stream. 



SAPPHIRINA NIGROMACULATA Oaus 



Figure 228 



Sapphirina nigromaculata Glaus, Die frei lebenden Copepoden, p. 152, pi. 8, 

 1863. — GiESBRECHT, Fauna und Flora des Golfes von Neapel, vol. 19, p. 619, 

 pis. 52-54, 1892. 



Occurrence. — Both sexes found in abundance in a surface tow at 

 Stations 1107 and 1108, Fish Hawk, south of Marthas Vineyard. 



