98 'proceedings of the national museum. vol.60 



antenna of same ; fig. 53, maxilliped ; fig. 54, second maxilla ; fig. 55, first leg ; 

 fig. 56, second leg of male of L. paenulatus ; fig. 57, nauplius of Lernanthropus 

 hrevoortiae. 



Plate 8. 



Fig. 58, side view of female of Lernanthropus hrevoortiae; fig. 59, dorsal view 

 of vascular system of same ; fig. 60, ventral view of vascular system, 



Plate 9. 



Fig. 61, ventral view of female of Nemesis atlantica; fig. 62, dorsal view of 

 male of same ; fig. 63, second antenna of female ; fig. 64, mouth tube and first 

 maxillae ; fig. 65, first swimming leg of female ; fig. 66, second leg ; fig. 67, fourth 

 leg; fig. 68, cross section through head at the base of the maxillipeds; ds, 

 dorsoventral muscle; lin, longitudinal muscle; mxp, maxilliped; n, ventral 

 nerve cord ; ov, ovary ; st, stomach ; fig. 69, cross section through fifth thorax 

 segment ; eg, cement glands ; in, intestine ; Im, longitudinal muscle ; sr, semen 

 receptacle. 



Plate 10. 



Fig. 70, dorsal view of female of Nemesis atlantica; fig. 71, longitudinal sec- 

 tion on the midline; eg, cement gland; oe, esophagus; ov, ovary; sr, semen re- 

 ceptacle ; vd, ventral nerve cord ; fig. 72, first antenna ; fig. 73, second maxilla ; 

 fig. 74, genital segment of male, ventral view ; fig. 75, mouth tube and first 

 maxillae of Lernanthropus hrevoortiae, male. 



Plate 11. 



Fig. 76, dorsal view of female of Eudactylina nigra; fig. 77, first antenna; 

 iig. 78, dorsal view of second antenna ; fig. 79, ventral view of second antenna of 

 another specimen ; fig. 80, mouth tube and first maxillae ; fig. 81, second 

 maxilla; fig. 82, maxilliped; figs. 83 to 85, first, second, and third swimming 

 legs. 



Plate 12. 



Fig. 86, nauplius of Eudactylina nigra; fig. 87, dorsal view of female of 

 rsexidocycnus appendiculatus, drawn by J. H. Blake; fig. 88, dorsal view of 

 male, drawn by J. H. Blake; fig. 89, body of female cleared in oil of winter- 

 green, showing cement glands {eg), oviducts (o), and semen receptacle {sr) ; 

 fig. 90, first antenna, female ; fig. 91, second antenna ; fig. 92, maxilliped ; figs. 

 93 to 95, first, second, and third swimming legs ; fig. 96, second maxilla ; fig. 97, 

 first antenna of Pseudocycnus huccatus; fig. 98, second antenna; fig. 99, second 

 maxilla ; fig. 100, maxilliped. 



Plate 13. 



Fig. 101, dorsal view of female of Pseudocycnus huccatus; fig. 102, ventral 

 view of another specimen without egg strings ; fig. 103, nauplius ; fig. 104, dorsal 

 view of genital segment of female Lernanthropus chlamydotus, showing large 

 spermatophores in position at the openings of the oviducts ; fig. 105, cross sec- 

 tion of the skin and underlying tissues in Dichelesthium oblongum. 



