no. 1404. p.l EASITK ' COPEPODS—a 1 TJOTD. E— WILSON. 671 



fig. 182, Furca; fig. 183, First swimming leg, showing absence of 

 plumose seta? on the terminal joint; fig. 184, C. isonyx, second maxilla; 

 fig. 185, Furca; fig. 186, Fourth swimming leg. The figures on this 

 plate are all taken from the respective authors named. 



Plate XVI. Oaligodes megacephalus, new species. Fig. 187, Dorsal view of female; 

 fig. 188, Second antenna; fig. 189, Second maxilla; fig. 190, Accessory- 

 spine on either side of the mouth tube; fig. 191, Furca; fig. 192, 

 Second maxilliped; figs. 193-195, First, second, and fourth swimming 

 legs. 



Plate XVII. Echetus typicus Kroyer. Fig. 196, Dorsal view of female; fig. 197, Side 

 view of same female; fig. 198, Second antenna; fig. 199, Mouth tube 

 and second maxilla; fig. 200, First maxilliped; fig. 201, Second max- 

 illiped; figs. 202-205, First, second, third, and fourth swimming legs. 



Plate XVIII. Lepeophtheirus. Fig. 206, Lepeophtheirus longipes, new species, dorsal 

 view of female; fig. 207, Second antenna; fig. 208, Second maxilliped; 

 fig. 200, Furca; figs. 210, 211, First and second swimming legs; fig. 

 212, l". thompsoni Baird, dorsal view of female; fig. 213, Second 

 antenna; fig. 214, Furca; fig. 215, Second maxilla; fig. 216, Second 

 maxilliped; figs. 217-219, First, second, and fourth swimming legs. 

 Fig. 220, L. innominatus, new species, second maxilla; fig. 221, Furca. 

 These two figures are under the same magnification as figs. 214 and 

 215. Fig. 222, L. longipes, second maxilla. 



Plate XIX. Lepeophtheirus nordmannii Milne- Ed wards. Fig. 223, Dorsal view of 

 female, drawn by Emerton; fig. 224, Dorsal view of male; fig. 225, 

 Second antenna; fig. 226, First maxilla; fig. 227, Second maxilla; 

 fig. 228, Second maxilliped; fig. 229, Furca; figs. 230-233, First, 

 second, third, and fourth swimming legs. 



Plate XX. Lepeophtheirus hippoglossi Kroyer. Fig. 234, Dorsal view of female; fig. 

 235, Dorsal view of male; fig. 236, Second antenna; fig. 237, Second 

 maxilla; fig. 238, Second niaxilliped; fig. 239, Furca; figs. 240-243, 

 First, second, third, and fourth swimming legs. 



Plate XXI. Lepeophtheirus edwardsi, new species. Fig. 244, Dorsal view of female; 

 fig. 245, Dorsal view of male; fig. 246, Second antenna of female; fig. 

 247, Terminal claw of second antenna of male; fig. 248, Second maxilla 

 of female; fig. 249, Second maxilla of male with accessory chitin 

 ridge; fig. 250, Furca; fig. 251, Second maxilliped of female; figs. 

 252-255, First, second, third, and fourth swimming legs; fig. 256, 

 Ventral view of genital segment of female, showing c. g. cement gland; 

 o. oviduct; s. spennatophores; s. r. semen receptacles; va. vagina; 

 fig. 257, Newly hatched nauplius, the pigment spots a deep yellowish 

 purple. 



Plate XXII. Lepeophtheirus. Fig. 258, L. edwardsi, dorsal view of chalimus, half 

 developed; fig. 259, L. dissimulatus, new species, dorsal view of male; 

 fig. 2(50, Dorsal view of female; tig. 261, Second antenna of female; fig. 

 262, Second antenna of male, showing branches; fig. 263, First maxilla; 

 fig. 204, Second maxilla of (ialapagos specimen; fig. 265, The same, 

 Bermuda specimen; fig. 200, Furca of (Ialapagos specimen; fig. 267, 

 The same, Bermuda specimen; fig. 268, Second maxilliped; figs. 269- 

 272, First, second, third, and fourth swimming legs; fig. 273, Ventral 

 view of genital segment and abdomen of Bermuda specimen; fig. 274, 

 The same, ( ialapagos specimen. 



Plate XX Ml. Lepeophtheirus parviventris, new species, and A. bifurcabus, new species. 

 Fig. 275, /,. parviventris, dorsal view of female; fig. 270, Dorsal view 

 of male; tig. 277, Second antenna, with accessory spine; fig. 278, 



