PLATE VI. 
1-17. Salenia varispina A. Aa. 
Fit'. 1. Young Salenia measuring 1.5 mm. (diameter of test), sliowing the fimbriated primary spines, 
and tlie plates of the anal system. 
Fi". 2. Young Salenia 3 mm. in diameter, seen from the actinal side. 
Fig. 3. The same as Fig. 2, seen from the abactinal side. 
Fig. 4. Inner view of the aljactinal system of a Salenia 8 mm. in diameter. 
Fig. 5. Part of actinal system, showing the imbricated plates in a young Salenia 7 mm. in diameter. 
Fig. 6. Part of the abactinal system of a young Salenia 2 mm. in diameter, showing the indistinct 
lozenge-shaped arrangement of the primary striation of the test. 
Fig. 7. Actinal termination of one of the ambulacral areas, showing the position of the sphoeridia and of 
one of the pairs of buccal tentacles of a Salenia 8 mm. in diameter. 
Fig. 7'. Interambulacral actinal area, showing also single sphxridia near the actinal extremity in each of 
the ambulacral areas. 
Fig. 8. JLignifled view of one of the pyriform sphreridia. 
Fig. 9-11. Magnified views of interambulacral papilloe. 
Fig. 12. Sessile papillco of the anal system. 
Fig. 13. Tube projecting beyond the genital opening. 
Fig. 14. Young forked primary spines of Fig. 1. 
Fig. 15. Stout-headed, short-stemmed trifid pedicellaria of the actinal surface. 
Fig. IG. One of the gills of a Salenia 8 mm. in diameter. 
Fig. 17. Sessile papillre of one of the genital plates of the abactinal system, covered with large pigment 
spots, and still showing the primary striation. 
18-23. Salenia Patterson! A. Aa. 
Fig. 18. Actinal part of amlnilacral area of Salenia 14 mm. in diameter, showing the gills, the imbri- 
cating plates, and one of the pairs of the buccal tentacles of the actinostome. 
Fig. 1!). Interambulacrid ]5art of actinostome of another Salenia 14 mm. in diameter, showing the imbri- 
cating plates of the actinostome and a pair of the large buccal tentacles, with comparatively 
slender long-stemmed pedicellariie. 
Fig. 20. Part of actinostome of another Salenia of nearly the same size : the granulation of the actinal 
plates is coarser. 
Fig. 21. The left posterior genital plate, showing the coarse granulation characteristic of the abactinal 
system of this species, with minute globular sphseridia in the notches of the plates, these 
globular spbisridia are similar to the pair of small, short-stemmed sphaeridia found at the 
base of the ambulacral tentacles near the actinostome. 
Fig. 22. Part of coronal plates of test of Salenia 14 mm. in diameter. 
Fig. 23. Granulation of anal plate. 
