156 



BULLETIN 15 8, UNITED STATES NATIONAL MUSEUM 



first four pairs of legs 3-segmented ; endopod of first legs 3-seg- 

 mented, of second, third, and fourth legs 2-segmented ; fifth legs 

 biramose in female, uniramose in male. A single species found in 

 the present area. 



PONTELLINA PLUMATA (Dana) 



FiGUKE lOG 



Pontella plumata Dana, Proc. Amer. Acad. Arts and Sci., vol. 2, p. 27, 1849. 

 Pontellina plumata Giesbbecht, Fauna und Flora des Golfes von Neapel, vol. 

 19, p. 497, pis. 25, 40, 1892. 



OccuTP&nce. — Three females from trawl wings. Station 2195, Albar 

 tross, south of Nantucket; one female in surface tow, Station 2204, 



Alhatross, south of Marthas 

 Vineyard. 



Dist7'lhution. — Tropical At- 

 lantic, Cape of Good Hope, 

 Kingsmill Islands (Dana) ; 

 East Indies (Lubbock) ; Mes- 

 sina (Claus) ; Fiji Islands, 

 Philippines (Brady) ; Malta 

 (Thompson) ; Atlantic and 

 Indian Oceans (Wolfenden) ; 

 Bay of Bengal (Sewell) ; Ma- 

 lay Archipelago (A. Scott) ; 

 Gulf of Suez, Indian Ocean, 

 Ceylon (Thompson and Scott) ; 

 trojDical Atlantic and Pacific, 

 Mediterranean (Giesbrecht) ; 

 northern Atlantic (Cleve) ; 

 South African coast (Steb- 

 bing). 



Color. — Body a light violet- 

 gray, deeper through the cen- 

 ter of the metasome and along the posterior margins of the first 

 and second thoracic segments. A large spot of deep purple, sur- 

 rounded by a margin of orange-red, occupies the center of these two 

 segments and extends forward into the head, and backward into 

 the third segment. Setae of the appendages and of the caudal rami, 

 and in the male the end segments of the first antennae and the 

 enlarged portion of the grasping antenna, also orange-red. Each 

 eye bordered on the inner side with a half circle of ruby red 

 (Rathbun). 



FeTnale. — Posterior corners of fifth segment reaching beyond the 

 center of the genital segment and nearly symmetrical; genital seg- 

 ment three times as long as the anal segment; the right caudal 



Figure 106.— PonfeHina plumata: a. Female, 

 dorsal (after Giesbrecht) ; b, female, fifth 

 leg; c, male, fifth legs 



