Observations on British Zoophytes. 
91 
IV. Observations on British Zoophytes. By T. Strethill Wright, M.D. 
Kionistes retiformis {%tm-'i(Srri(ii). 
Polypary retiform — alimentary polyps minute, white, with single row of short 
tentacles — reproductive polyps columnar, thickened towards apex, with- 
out tentacles, bearing many generative capsules. 
A male specimen of this zoophyte was found growing in an 
old shell at Granton in May 1857. The corallum consists of 
a close network of flattened chi- 
tonous tubes, from out of which 
the alimentary and reproductive 
polyps spring at intervals. The 
sperm - sacs (one of which is 
shown in the marginal woodcut) 
attached to the reproductive polyp 
differ from those of Hydractinia, 
in having the endoderm attached 
to the ectoderm at their distal ex- 
tremities, as I have figured in the Reproductive polyp of K. reteformis 
p , , . rm • with single sperm-sac ; a, endo- 
sperm-sac ol hudendrium. ihis ^lerm, h, ectoderm, c, cavity con- 
zoophyte approaches the Sertu- taining spermatozoa. 
lariadse in the simple columnar form of its untentacled re- 
productive polyps, and forms the connecting link between the 
Tubulariadae and Sertulariadse. Thus we have : — 
Sperm or egg sacs attached to ordinary alimentary | Qjg^^g^ q^j. 
polyps, as in . . . . . • j » / ? • 
Sperm or eo-g sacs attached to reproductive ali- ) -r, , ^ • i 
^ , J- Tf rodocoryna fucicola 
mentary polyps, which diner irom ordinary all- >- / 
mentary polyps in having fewer tentacles, as in J 
Sperm or egg sacs attached to reproductive polyps, ) tt ^ l- • 
with rudimentary mouth and tentacles, as in J 
Sperm or egg sacs attached to reproductive polyps ) -r^. . q i. i • 
without mouth or tentacles, as in . .J ^lo^istes, bertularia. 
V. (1.) On the Vomer in Man and the Mammalia, and on the Sphenoi- 
dal Spongy Bones. By John Cleland, M.D., Demonstrator of 
Anatomy in the University of Edinburgh. 
The remarks which I am about to make will be confined as 
much as possible to matters of observation. I shall resist the 
temptation to enter on the question of the constitution of the 
