480 PROCEEDINGS OF THE NATIONAL MUSED!. vol. xxxv. 



fourth swimming legs. Fig. 60. Dorsal view of male. Figs. 07. Furca of male. 

 Fig. 08. One side of the ventral surface of the male, showing the rudimentary 

 fifth and sixth swimming legs. 



Plate LXXIII. 



The female and a chalimus of Achtheinus oolongus, new species. 



Fig. 09. Dorsal view of adult female. Fig. 70. Second antenna. Fig. 71. 

 Mouth tube and second maxilhe. Fig. 72. Second maxilliped. Figs. 73 to 76 

 First, second, third, and fourth swimming legs. Fig. 77. Ventral view of genital 

 segment and abdomen, showing the cement glands and rudimentary fifth legs. 

 Fig. 78. Dorsal view of chalimus, showing the paired attachment filaments 

 and the second and third thoracic segments still distinct. Fig. 70. Second max- 

 illiped of chalimus. 



Plate LXXIV. 



The female of Eudactylina uncinata, new species. 



Fig. 80. Dorsal view of female. Fig. 81. First antenna. Fig. 82. Second 

 antenna. Fig. 83. Mouth tube and second maxilla 1 . Fig. 84. Second maxilliped. 

 Fig. 85. First maxilliped. Figs. s<; to 89. First, second, fourth, and fifth swim- 

 ming legs. Fig. 90. Tip of abdomen, showing anal laminae. 



Plate FXXY. 



The male and female of HatscheMa pinguis, new species. 



Fig. 91. Dorsal view of female. Figs. !)2 and 93. First and second swimming 

 legs. Fig. 94. Dorsal view of male. Fig. 95. Second antenna of male. Fig. 

 !><;. Second maxilliped of male. Figs. 07 and 98. First and second swimming 

 legs. 



Plate LXXVI. 



The females of Lemoeenicus muduswus, new species, Phrixocephalus cincin- 

 natus, new species, and Opimia exilis, new species. 



Fig. 99. Dorsal view of the female of Lemoeenicus medusosus. Fig. 100. 

 Ventral view of the head and anterior thoracic segment, showing the two pairs 

 of rudimentary legs. Fig. 101. Ventral view of the female of Phrixocephalus 

 cincinnatus, showing the rudimentary mouth parts and the two pairs of rudi- 

 mentary legs. Fig. 102. Dorsal view of the female of Opimia gracilis. Fig. 

 L03. Lateral view of the head and first thorax segment, showing the single pair 

 of rudimentary legs. Fig. 104. Ventral view of the head, showing the second 

 antenna (</). the mouth tube with a rudimentary mandible {mil.), and maxilla 

 (mx.) on either side of it. and the single pair of maxillipeds inijt.). In this 

 figure the head has been bent backward, thus increasing the space between the 

 maxillipeds and the mouth parts; the normal position is shown in fig. 103. 



Plate LXXVII. 



The male ami female of Brachiella gracilis, new species. 



Fig. L05. Lateral view of female with attached male. Fig. L06. I»<>rsal view 

 of first and second antenna-. Fig. L07. Ventral view of second antenna', mouth 

 tube, and maxilhe. Fig. L08. .Mandible. Fig. 109. Ventral side of first maxilli- 



