REPORT ON THE ECHINOIDEA, ' 303 



Fig. 4. Same, seen facing the odd anterior ambulacrum. 

 „ 5. Same, seen facing the anal system. 

 ,, 6. Actinostome of same, enlarged. 

 ,, 7. Normal UrecMnus naresiamis seen in profile {—). 

 „ 8. Same, seen from the abactinal side. 

 „ 8 a. Enlarged figure of abactinal system of same. 

 ,, 9. Same, seen from the actinal side. 



„ 10. Another specimen, with a subanal fasciole, measuring 48 mm., seen from the 



actinal side. 



,, 10 a. Anal system of same, with a subanal fasciole, enlarged. 



„ 11. Same, seen from the abactinal side. 



„ 12. Same, seen in profile, showing the blunt anal snout. 



„ 13. Same, seen facing the posterior extremity. 



,, 14. Same, seen facing the odd anterior ambulacrum. 



Brissus damesi, A. Ag. (figs. 15, 16), p. 197. 



,, 15. Part of test of specimen, measuring 22 mm., seen from the abactinal side. 

 „ 16. Anal system of same, showing rudimentary fasciole, enlarged. 



PLATE XXXI. 



Pourtalesia laguncula, A. Ag. (figs. 1-11), p. 137. 



Fig. 1. Seen from the actinal side, specimen measuring 22 mm. 



,, 2. Same, seen from the abactinal side. 



,, 3. Same, seen in profile. 



,, 4. Profile view of anal snout, greatly enlarged. 



,, 5. Same as fig. 3, seen facing the anal extremity. 



,, 6. Same, seen facing the anterior extremity. 



„ 7. Younger specimen, measuring 12 mm., seen from the actinal side. 



,, 8. Same, seen from the abactinal side. 



,, 9. Same, seen in profile. 



,, 10. Elong-ated anal snout of difierent specimen, of about same size as fig. 7, seen in 



profile. 



„ 11. Anal snout of another specimen, less elongate, measuring about 12 mm. 



Genicopatagiis affinis, A. Ag. (figs. 12-22), p. 162. 



„ 12. Seen from the actinal side, natural size. 

 ,, 13. Same, seen from the abactinal side. 



