PLATE 32. 



Cuticle and hypodermis from side of head unless otherwise stated. 



Fig. 1. Hypodermis and its products in Strophomenia spinosa, large specimen. X 205. 



Fig. 2. Same in Lophomenia spiralis. X 255. 



Fig. 3. Same in Strophomenia scandens. X 155. 



Fig. 4. Same in Halomenia gravida. X 225. 



Fig. 5. Perforation of the somatic musculature in H. gravida by a diverticulum of the mid gut 



which comes in contact with a modified hypoderraal papilla; s, blood sinus. X 255. 



Fig. 6. Hypodermis of Drepanomenia vampyrella. X 255. 



Fig. 7. Same of Ichthyomenia porosa. X 330. 



Fig. 8. Same of Dondersia californica. X 555. 



Fig. 9. Section through the dorsal sense organ of Strophomenia scandens. X 300. 



Fig. 10 Same of Proneomenia hawaiiensis; ne, nerve. X 180. 



Fig. 11. Same of Lophomenia spiralis; ne, nerve. X 150. 



