WESTERLY. — Eiicalanus 



PLATE 6. 



All figures reproduced from photographs of sections. 



Fig. 56. Dorsal aspect of portion of frontal section of brain, showing the 



nerves (n.) from the organs of Glaus. X 540. 



The same section at slightly different focus and less magnification 



is shown in Figure 60. 

 Fig. 57. An organ of Glaus in frontal section; basal plates and interior 



bodies (pha'so.) well shown. Vom Rath. X 405. 

 Fig. 58. The section shown in Plate 1, Figure 7. X 380. 

 Fig. 59. The section drawn in Figure 2 (Plate 1). 

 Fig. 60. Dorsal aspect of portion of frontal section of brain, showing the 



organs of Glaus. X 390. 

 Fig. 61. The section from which Figure 18 (Plate 2) was drawn. X 420. 

 Fig. 62. Frontal section of eye seen from the dorsal side. Vom Rath. X 



475. 

 Fig. 63. Anterior face of a cross section of an eye, showing sharply defined 



basal plates, tapetum, hypodermis, and cuticular body wall. 



Zenker; iron haematoxylin. X 560. 

 Fig. 64. The section immediately dorsal to the one shown in Figure 59. 

 X 500. 



