PLATE XXII. 
Diam. 
Fig. 1. Plagusia immaculata, Lamarck, male example, . x 2 
Fig. la. Inferior view of the cervical region, showing the antennae and 
maxillipedes, . . . . x 4 
Fig. 16. Chelipede, . . . . . x 3 
Fig. 1 c. Post-abdomen of the male, . . . X 3 
Fig. \(h Plar/usia chabrus (Linne), exterior view of a chelipede, . nat. size. 
Fig. 2. Pinnotheres villosulus, Guerin-Meneville, adult female, . x 3 
Fig. 2a. Anterior view of the cervical region, showing the form of the 
frontal lobes and position of the antennules and antenna;, . x 6 
Fig. 2 b. Exterior maxillipede (interior view); considerably magnified. 
Fig. 2c. Exterior view of a chelipede, . . . . X 3 
