364 PROCEEDINGS OF THE NATIONAL MUSEUM vol. loi 



setae, distal segment, with one surface and six terminal setae. 

 Third leg much like second but with shorter setae; margin of 

 basipod and exopod spinulose. Fourth leg with a few small spines 

 across middle of distal segments of both rami; both exopod and 

 endopod with two spines on proximal segment, distal segments 

 with six and four spines. Fifth leg uniramous, 2-segmented basal 

 segment more or less globose ; second segment tapering toward tip, 

 which bears two setae. 



Measurements : Length 3 mm. ; carapace length 1.0 mm. ; width 

 0.9 mm. 



Male. — Unknown. 



Type.—V.S.'NM. No. 88535. 



Host. — A single female was taken from the gill of a sand shark, 

 Carcharias littoralis (Mitchill). 



Remarks. — This species differs from Wilson's N. versicolor 

 (1913) and N.atlantica (1922) in the shape of the cephalothoracic 

 carapace, which has no anterolateral projections, in the character 

 of the terminal hooks of the second antenna and second maxilla, 

 in the length and greater number of eggs in the egg strings, and 

 in the size of the maxilliped and in the armature of its terminal 

 hook. It differs from Wilson's (1932) N. pallida in the character 

 of the fifth feet, the armature of the second maxillae, and the 

 larger number of segments in the first antennae. 



Genus LERNAEENICUS Richiardi 



LERNAEENICUS LONGIVENTRIS Wilson 



Lemaeenicus longiventris Wilson, Proc. U. S. Nat. Mus., vol. 53, p. 66, pi. 7, 

 1917. 



Some females of this species were present in the bodies of some 

 mullets, Mugil cephalus Linnaeus, shipped from Miami, Fla. These 

 were not included in the summary at the beginning of this paper. 



Family PSEUDOCYCNIDAE 



Genus PSEUDOCYCNUS Sundevall 



PSEUDOCYCNUS APPENDICULATUS Heller 



Pseudocycniis appendiculatus Heller, Reise der Osterreichischen Fregatte 

 Novara, vol. 2, pt. 3, Crustacea, p. 218, pi. 22, 1865. 



Three females were collected from the gills of a common bonito, 

 Sai'da sarda (Bloch) . 



