136 MR. W. K. BROOKS ON LUCIFER: 



Fig. 74. Side view of posterior half of carapace and first abdominal somite of a mature 

 female, to show the reproductive organs. In order to reduce the number 

 of figures this specimen is represented with its ovaries full of ripe eggs, 

 while a large bunch of developing eggs are attached to the basal joints of 

 the last pair of thoracic appendages, but these two features are never 

 exhibited completely at the same time in a single individual. 



co. Carapace. 



h. Heart. 



i. Intestine. 



trj. Thoracic ganglia. 



or. Ovary. 



od. Oviduct. 



AT. Seminal receptacle. 

 Fig. 75. The corresponding part of the body of an adult male. 



c. Carapace. 



h. Heart. 



i. Intestine. 



tg. Thoracic ganglia. 



a. First abdominal somite. 



t. Testis. 



vd. First division of vas deferens. 



sp. Second division. 



sv. Third division. 

 Fig. 76. First pleopod of young male. 



Fig. 78. Side view of the larva shown in Plate 10, fig. 77 (Zfiiss, A. 2). 

 Fig. 79. Dorsal view of the same larva. 

 Fig. 80. Mandible of the same larva, 

 Fig. 81. First maxilla of the same larva. 



en. Endopodite. 



so. Scaphognathite. 

 Fig. 82. Second maxilla of the same larva. 



so. Scaphognathite. 



en. Endopodite. 



PLATE 10. 



Fig. 77. Ventral view of the last Protozoca stage of Acetes Tooo tn inch long. 



ex. Exopodite of second antenna. 



en. Endopodite of second antenna. 



Fig. 85. The specimen shown in fig. 84, after another moult and TcuMjth mcn 

 Fig. 86. First antenna of the same larva. 

 Fig. 87. Second antenna of the same larva. 



