NO. 1573. PARASITIC COPEPODS— WILSON. 489 



Plate XXXI. The female of Pandarun sntyrvs D^ina. 



Fig. 162, Dorsal view, egg-strings not fully developed; fig. 163, Second antenna; 

 figs. 164 and 165, First and second maxillipeds; fig. 166, Mouth-tube and second 

 maxillae; figs. 167 to 170, First, second, third, and fourth swimming legs; fig. 171, 

 Ventral view of genital segment and abdomen, showing folding of internal oviducts, 

 the semen receptacle, spermatophores in position, and anal lamin#. 



Plate XXXII. Th(> female of Pandarns sinuatns Say. 



Fig. 172, Dorsal view, egg-strings 15 mm. in length; fig. 173, Second antenna; fig. 

 174, Mouth-tube and second maxilla?; figs. 175 and 176, First and second maxillipeds; 

 figs. 177 to 180, First, second, third, and fourth swimming legs; fig. 181, Ventral sur- 

 face of genital segment and abdomen, showing abdomen (a), anal lamina? (a. I.), 

 cement glands (c. g.), and semen receptacle (s. r.); fig. 182, Dorsal view of young 

 female, 4.5 mm. in length. 



Plate XXXIII. The male of Pnndnrus siniintiis Say. 



Figs. 183 and 184, Donsal and ventral views of the abdomen of a young female, 

 showing the sixth segment plate just beginning to grow; fig. 185, Dorsal view of male; 

 fig. 186, Second antenna; figs. 187 and 188, First and second maxillipeds; figs. 189 to 

 192, First, second, third, and fourth swimming legs ; fig." 193, Ventral surface of genital 

 segment, showing spermatophore receptacles and their coiled ducts. 



Plate XXXIV. The femaie of Nesippvfi alatiis Wilson. 



Fig. 194, Dorsal view, egg-strings 13.5 mm. in length; fig. 195, First antenna and 

 adhesion pad; fig. 196, Second antenna; fig. 197, Mouth-tube and second maxillae; 

 figs. 198 and 199, First and second maxillipeds; figs. 200 to 203, First, second, third, 

 and fourth swimming legs; fig. 204, Ventral surface of genital segment and abdomen, 

 showing cement glands and semen receptacle; fig. 205, Dorsal view of young female 

 4 mm. in length. 



Plate XXXV. The male of Nesippus alatus Wilson. 



Fig. 206, Dorsal view; fig. 207, First antenna, and its adhesion pad; fig. 208, Second 

 antenna; fig. 209, Mouth-tube and second maxilla;; fig. 210, First maxilliped ; figs. 211 

 to 214, First, second, third, and fourth swimming legs. 



Plate XXXVI. The male of Nesippus curticaudis Dana. 



Fig. 215, Dorsal view; fig. 216, Second antenna; fig. 217, Mouth-tube and second 

 maxilla?; figs. 218 and 219, First and second maxillipeds; figs. 220 to 223, First, second, 

 third, and fourth swimming legs. 



Plate XXXVII. The male of Nesippus borealis Steenstrup and Liitken. 



Fig. 224, Dorsal view; fig. 225, Second antenna; fig. 226 First maxilliped; fig. 227, 

 Second maxilliped; figs, 228 1o 231, First, second, third, and fourth swimming legs. 



Plate XXXVIII. The female of Cecrops latreilHi Leach. 



Fig. 232, Dorsal view; fig. 233, Mouth-tube and second maxillae; fig. 234, Mandible; 

 fig. 235, Second maxilliped; figs. 236 to 240, First, second, third, and fourth swimming 

 legs; fig. 240, Ventral view of the fourth leg, showing fold of tissue which assists in 

 keeping the external egg-strings in place; fig. 241, Ventral view of genital segment and 

 abdomen in a young female; fig. 242, Dorsal view of young female 12 mm. in length. 



