PLATE XXXV. 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
Figs. 1-10. Leptoclinum tonga, n. sp. 
Figs. 11-14. Leptoclinum alhidum, var. grande, nov. 
ad. Adhering process of test. 
hr. Branchial aperture. 
l.s. Lower surface of colony. 
sy). Calcareous spicule in test. 
sph. Sphincter. 
t.c. Test cell. 
t.m. Test matrix. 
tn. tn'. Tentacles. 
1. Colony oi Leptoclinum tonga ; natural size. 
2. Part of a section, showing the anterior end of an Ascidiozooid cut vertically; 
highly magnified (S., inch). 
3. Part of a section of the lower surface of the colony, showing the adhering 
prolongations of test; magnified (S., 1 inch). 
4. - Spicules from the test ; highly magnified (S., inch). 
5. Small part of a section of the test, after decalcification in hydrochloric acid, 
stained in aniline blue ; highly magnified (S., ^ inch). 
6. Small part of a section of the test, after decalcification in a solution of carbon 
dioxide for eighteen hours, stained in aniline blue ; highly magnified 
(S., ^ inch). 1 indicates the boundary of the vacuole, and 2 the membrane 
of the spicule. 
7. Small part of a section of the test, after partial decalcification in hydrochloric 
acid, stained in eosine ; highly magnified (S., ^ inch). 
8. A spicule teased out and stained with aniline blue ; highly magnified (Z., ^3^). 
9. Another spicule similarly treated ; highly magnified (Z., -j3^). 
Fig. 10. Small part of a section of the test, after decalcification in a solution of carbon 
dioxide for twenty-four hours, stained in aniline blue ; highly magnified 
(S., i inch). 
Fig. 11. Colony of Leptoclinum alhidum, var. grande; natural size. 
Fig. 12. Part of the surface of Leptoclinum alhidum, var. grande ; magnified (S., 1 inch). 
Fig. 13. The branchial aperture of an Ascidiozooid of Leptoclinum alhidum, var. 
grande; highly magnified (S., J inch). 
Fig. 14. Spicules from the test of Leptoclinum alhidum,'- y ax. grande; highly 
magnified (S., -J- inch). 
