SEA-FISHERIES LABORATORY. 493 



Fig. 25. Right abdominal appendage of female, viewed 

 from behind. To show the muscles of the 

 protopodite and exopodite, the posterior walls 

 of the protopodite, exopodite and endopodite 

 have been removed, x 3. 



Fig. 26. Anterior view of the right first maxilla, in order 

 to show the muscles. x 2. 



Fig. 27. Anterior view of the right second maxilla, to 

 show the extensor muscles of the scapho- 

 gnathite. x 1^. 



Fig. 28. Anterior view of the right second maxilla, in 

 order to show the muscles of the scapho- 

 gnathite. The extensor muscles have been 

 cut short, and the basal and inner portions of 

 the scaphognathite have been opened in order 

 to show tne flexors and accessory muscles, 

 x li. (To see this appendage in its natural 

 position, the figure must be rotated to the left 

 through an angle of 45°.) 



Fig. 29. Posterior view of part of the first maxillipede 

 of the right side, in order 10 show the muscles 

 of the maxillipede and flabellum. The posterior 

 flexor and the extensor muscles of the 

 flabellum are cut through. x 2. 



Fig. 30. Posterior view of the third maxillipede of the 

 left side. The ventral walls of the various 

 parts have been removed in order to display 

 the muscles. x 1\. (The base of the 

 appendage is to the left of the figure.) 



Fig. 31. A dissection of the anterior part of the cephalo- 

 thorax to display the muscles of that region. 

 The dorsal portion of .the carapace has been 

 removed, and also the soft parts, with the 

 exception of the muscles, x 2. 



Fig. 32. Dissection of the female abdomen from the 

 ventral side to display the extensor muscles. 

 The ventral wall and appendages have been 

 removed, as well as all the soft parts, x \. 



Fig. 33. Semi - diagrammatic longitudinal section 

 through the abdomen of the female, to show 

 the extensor and flexor muscles, x i 



