PLATE LI. 



HoPLOPHORA MAGNA. (Page 556.) (See also PL L.) 



Fig. 1. Adult; somewhat diagrammatic view of the 

 left genital and anal plates and surrounding 

 parts seen from above (within the body) ; 

 (g.p.) genital plate ; (an.) anal plate ; {d. p.) 

 part of the dorsal plate; {I. p.) part of the 

 lateral plate anchylosed to the dorsal plate, and 

 representing the acropleuron and basipleuron ; 

 (v. p.) vestigial ventral plate anchylosed to the 

 anal plate ; (e^.) expulsory vesicle. 



2 a, 2 b, 2 c, 2d, 2 e, 2f, 2 g. Eggs in progressive 

 stages of development, and in various posi- 

 tions, dissected out of the oviducts of the 

 female. All X 100. 2 g is the highest state 

 of maturity attained within the body of the 

 mother. 



8. Young hexopod larva lately emerged from the 

 egg. X 100. The abdomen has not yet 

 attained its proper shape. 



4. The egg-shell from which it has escaped. X 100. 



HoPLOPHOEA ANOMALA. (Page 558.) Length from 

 about '75 to about 1*60 mm. 



5. Adult ; extended, and with genital and anal 



plates open, and genital suckers protruded ; 

 side-view. X 50. 



6. Adult ; nearly closed up ; side-view. X 50. 



HoPLOPHORA STRIODLA. (Page 563.) Length about 



'52 mm. 



7. Adult; from above. X 85. 



HoPLOPHORA ARDUA. (Page 564.) Length about 80 mm. 



8. Adult ; from the side. X 75. 



9. Adult; left maxilla and palpus from above. 



X 200. 



10. Adult; right mandible from the inner (left) 



side. X 180. 



11. Adult; pseudo-stigma and pseudo-stigmatic 



organ. X 250. 



12. Adult; genital and anal plates. X 80. 



13. Adult; interlocking portion of anal plates. 



X 500. 



14. Adult; 1st leg. X 180. 



15. Adult; 4th leg. X 180. 



