PLATE XLI. 



Drawn by me from living specimens in the Canary Island Lanzerote, February 1867. 

 The signification of the characters is the same in all the figures : — 



cs. Somatocyst. 

 co. Oleocyst. 

 ui. Hydrcecium. 

 a. Trunk of the siphosorne. 



i. Buds. 



v. Velum. 

 IB, Subumbrella. 



cd. Dorsal canal. 

 cv. Ventral canal. 

 ex. Right canal. 

 cl. Left canal. 

 cc. Circular ring-canal. 



For the other characters, compare the special 

 description, pp. 139, 140. 



Diam. 



Cymba crystallus, n. sp. (p. 138). 



Fig. 1. Basal view of the complete corm (from below). The quinquedentate 

 mouth of the nectosac (no) is visible in the centre of the figure, and 

 beyond it the quadridentate aperture of the hydrcecium (ui) ; in the 

 latter is hidden the retracted siphosorne (a), . . . x 8 



Fig. 2. Apical view of the complete corm (from above). The superior or 

 proximal half of the nectophore is visible, divided by four serrate, 

 cruciate, perradial edges into four nearly equal quadrants. In the 

 middle of each quadrant descends an interradial apophysis. The 

 apex of the nectosac (w) appears in the centre of the figure through 

 the upper (dorsal) half of the nectophore, the apex of the hydrcecium 

 (ui) through its lower (ventral) half, . . . . x 8 



Fig. 3. Dorsal view of the nectophore, with its subumbrellar nectosac (w), . x 4 



Fig. 4. Ventral view of the complete corm (anterior side). The hydrcecium 

 with its basal mouth (ui) and the included siphosorne, above it the 

 somatocyst (cs), and at its apex the oleocyst (co), appear through the 

 pentagonal ventral face of the nectophore. This is surrounded by 

 four interradial faces, two smaller apici-lateral (ua" right, ua' left) 

 and two larger basi-lateral (ux right, ul left), . . . x 8 



Fig. 5. Lateral view of the complete corm, from the left side. The nectosae 

 with its mouth (uo) appears through the dorsal half of the necto- 

 phore, the hydrcecium with the included siphosorne (i) through the 

 ventral half, above it the somatocyst (cs) and the oleocyst (co), . x 8 



Fig. 6. The nectosac (iv) and the hydrcecium (ui) in lateral view, from the 

 right side. The retracted siphosorne (i) is included in the hydrce- 

 cium, above it the somatocyst (cs), and at its apex the oleocyst (co), x 1G 



Fig. 7. The mouth of the nectosac (with five teeth), and beyond it the mouth 

 of the hydrcecium (ui) with the included siphosorne (co). Basal 

 view of the central portion of the nectophore, . . . x 1 6 



Fig. 8. Lateral view of the mouth of the nectophore (from the right side), . x 16 



